99 (number)

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This article is about the number. For other uses, see 99 (disambiguation).
98 99 100
Cardinal ninety-nine
Ordinal 99th
Factorization 32× 11
Divisors 1, 3, 9, 11, 33, 99
Roman numeral XCIX
Binary 11000112
Ternary 102003
Quaternary 12034
Quinary 3445
Senary 2436
Octal 1438
Duodecimal 8312
Hexadecimal 6316
Vigesimal 4J20
Base 36 2R36

99 (ninety-nine) is the natural number following 98 and preceding 100.


99 is the ninth repdigit, a palindromic number, a lucky number, and a Kaprekar number. It is the sum of divisors of the first eleven positive integers.

99 is the sum of the cubes of three consecutive integers:

99 = 23 + 33 + 43



In the National Hockey League, 99 has been the only number retired league-wide, for Wayne Gretzky. The Edmonton Oilers and Los Angeles Kings, the two teams for which he played the bulk of his NHL career, have separately retired the number in his honor.

  • The highest jersey number allowed in most major league sports, uniform numbers are limited to 2 digits.

99 is the NBA record for Most Free Throw Attempts in a 7-game series, set by Elgin Baylor of the Los Angeles Lakers in 1962. In the fictional film Major League, Charlie Sheen's character wore the Cleveland Indians #99 uniform.

Greg Moore's Champ Car car number 99 was retired after his fatal accident.

In NASCAR, car #99 is owned by Roush Fenway Racing. From 1996 to mid-2004, the car was driven by Jeff Burton. Since then, it has been driven by Carl Edwards.

In rugby union, the 99 call was a strategy devised by British Lions captain Willie John McBride during the squad's tour to South Africa. On a call of "99", each Lions player was expected to physically attack the nearest Springbok; this was a pre-emptive strategy against the Springboks' perceived strategy of physical intimidation.



  1. ^ Royal Society of Chemistry - Visual Element Periodic Table
  2. ^ Denis Guedj, Numbers: The Universal Language, transl. Lory Frankel. New York: Harry N. Abrams (1997): 125.