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99 (number)

99 is the natural number following 98 and preceding 100.

List of numbers — Integers << 90 91 92 93 94 95 96 97 98 99 >>
Cardinal	ninety-nine
Ordinal	99th (ninety-ninth)
Factorization	<math>3^2 \cdot 11<math>
Divisors	3, 9, 11, 33
Roman numeral	XCIX
Binary	1100011
Hexadecimal	63

Ninety-nine is the ninth repdigit, a palindromic number and a Kaprekar number.

Ninety-nine is also:

• Often used as a qualifier for something which is almost but not quite certain: "Ninety-nine per cent sure."
• The atomic number of einsteinium, an actinide.
• The designation of American Interstate 99, a freeway in Pennsylvania, planned to be extended into New York.
• A card game.
• In the TV show Get Smart, the codename of Agent 99.
• In the title of the Nena song 99 Luftballoons (99 Red Balloons).
• The uniform number of retired NHL player Wayne Gretzky.
• The year AD 99, 99 BC, or 1999.