99 (number)

The number 99 is a natural number that follows 98 and precedes 100. It is an integer, an odd number, and can be expressed in various numeric systems: - In Roman numerals, it is represented as XCIX. - In binary, it is written as 1100011. - In hexadecimal, it is represented as 63. Mathematically, 99 is the square of 9.