Nine thousand nine hundred ninety
9990 is an even number.
9990 is a Harshad number, which means it is divisible by the sum of its digits (9 + 9 + 9 + 0 = 27, and 9990 is divisible by 27).
In binary, 9990 is represented as 10011100000110.
In hex, 9990 is represented as 2706.
Prime factorization of 9990: 2 * 33 * 5 * 37.
Factors of 9990 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 90, 111, 135, 185, 222, 270, 333, 370, 555, 666, 999, 1110, 1665, 1998, 3330, 4995, 9990.