169 (number)

169 is the natural number following 168 and preceding 170.

Template:Numbers 160s
169
Cardinal	one hundred [and] sixty-nine
Ordinal	169th
Factorization	$169=13^{2}$
Roman numeral	CLXIX
Binary	10101001
Hexadecimal	A9

In mathematics

• 169 is an odd number
• 169 is a square number. 13 x 13 = 169, and the reverse 31 x 31 = 961
• Being 13 squared, 169 is one of the few squares to also be a centered hexagonal number. But like any other odd square, it is a centered octagonal number
• 169 is an odd-indexed Pell number, thus it is also a Markov number, appearing in the solutions (2, 169, 985), (2, 29, 169), (29, 169, 14701), ...
• 169 is the sum of seven consecutive primes: 13 + 17 + 19 + 23 + 29 + 31 + 37
• 169 is a composite number
• 169 is a deficient number, as 14 is less than 169
• Divisors: 1, 13, 169

In astronomy

• 169 Zelia is a bright main belt asteroid
• Gliese 169 is an orange, main sequence (K7 V) star in the constellation Taurus
• QSO B0307+169 is a quasar in the constellation Aries
• Sayh al Uhaymir 169 is a 206g lunar meteorite found in Sultanate of Oman

In geography

• 169th meridian east and 169th meridian west
• Bryan, Texas is 169 miles south of Dallas
• Pittville No. 169, Saskatchewan is a rural municipality in Saskatchewan, Canada
• The American Watch Tool Company at 169 Elm Street in Waltham, Massachusetts
• The Oak Island Lighthouse on Oak Island, North Carolina is 169 feet in height
• The Thames River flows 169 miles through Ontario, Canada

In the military

• USNS Private Jose F. Valdez (T-AG-169) was a United States Navy technical research ship during the 1960s
• USS Chatham (AK-169) was a United States Navy Alamosa-class cargo ship during World War II
• USS Gallatin (APA-169) was a United States Navy Haskell-class attack transport during World War II
• USS Foote (DD-169) was a United States Navy Wickes-class destroyer following World War I
• USS Atherton (DE-169) was a United States Navy Cannon-class destroyer escort during World War II
• USS Dolphin (SS-169) was a United States Navy submarine during World War II
• 169th Battalion, CEF unit in the Canadian Expeditionary Force during the World War I
• 169th Fires Brigade the US Army National Guard artillery brigade, a part of the Colorado Army National Guard
• The United States Air Force's 169th Fighter Wing fighter unit at McEntire Joint National Guard Station, South Carolina
• 169 or 169th Squadrons
  • 169th Airlift Squadron, a unit of the U.S. Air Force
  • Marine Light Attack Helicopter Squadron 169, United States Marine Corps Light Attack Helicopter Squadron
  • No. 169 Squadron RAF, a unit of the United Kingdom Royal Air Force

In transportation

• The Alfa Romeo 169 car is expected to be the replacement for the Alfa Romeo 166
• Metro Transit Route 169 in Seattle
• 169th Street station on the IND Queens Boulevard Line of the New York City Subway served by the E and F trains
• 169th Street was a station on the demolished IRT Third Avenue Line of the New York City Subway
• The Ticonderoga was a 169- foot steam clipper displacing 1,089 tons, launched in 1849 at Williamsburg, New York
• Thomas Sopwith, an English aviation pioneer flew flew 169 miles (272 km) in 3 hours, 40 minutes on December 18, 1910
• Highways and routes numbered 169 include:
  • U.S. Route 169 runs from Virginia, Minnesota to Tulsa, Oklahoma
    • Bannered routes of U.S. Route 169 (with exits in Oklahoma, Missouri, and Iowa)
  • Arizona State Route 169
  • California State Route 169
  • Route 169 runs from Norwich, Connecticut to Charlton, Massachusetts
  • Illinois Route 169
  • Massachusetts Route 169
  • M-169, Michigan was a state highway route in Michigan that connected US 27 and M-55
  • Minnesota State Highway 169
  • Nevada State Route 169
  • New Jersey Route 169
  • New York State Route 169
  • Ohio State Route 169
  • Tennessee State Route 169
  • Texas State Highway Spur 69
  • Utah State Route 169
  • Virginia State Route 169
  • Washington State Route 169
  • Wisconsin Highway 169
  • Highway 169 is a defunct highway in Ontario
  • Quebec Route 169
  • National Route 169 is a national highway of Japan connecting Nara, Nara and Shingū, Wakayama

In TV and radio

• The IEC 169-2 connector TV aerial plug
• Channel 169 on The Dish Network is Nick Jr.
• Channel 169 on XM Satellite Radio is The Power, an African-American talk channel

In other fields

169 is also:

• The year AD 169 or 169 BC
• 169 AH is a year in the Islamic calendar that corresponds to 785 – 786 CE
• The atomic number of an element temporarily called Unhexennium
• The number of "likes" The Wumpian Empire currently has on 3/14/2012
• 169 is the number of nonequivalent starting hands in the card game Texas hold 'em
• 169 is on the scoreboard on the video game Guitar Hero along with the number 666
• 169 is known in the computing world as the first number of an automatic IPv4 address assigned by TCP/IP when no external networking device is contactable
• Minuscule 169 is a Greek minuscule manuscript of the New Testament, on parchment
• Buddha Dordenma, a Shakyamuni Buddha statue statue under construction in the mountains of Bhutan, once completed, would be among the tallest Buddha rupas in the world at 169 feet

See also

• List of highways numbered 169
• United States Supreme Court cases, Volume 169
• United Nations Security Council Resolution 169
• St. Joseph Community Consolidated School District 169

External links

• Number Facts and Trivia: 169
• The Positive Integer 169
• Prime curiosities: 169
• The Number 169
• VirtueScience: 169
• Number Gossip 169
• Boilermakers Local 169, Michigan