Number 999 is not a prime number. It is a composite number.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. We do not consider 999 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 999 below).

Number of factors: 8.

List of factors/divisors: 1, 3, 9, 27, 37, 111, 333, 999.

Parity: 999 is an odd number.

Perfect square: no (a square number or perfect square is an integer that is the square of an integer).

Perfect number: no, because the sum of its proper divisors is 521 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 992 no | 993 no | 994 no | 995 no | 996 no | 997 yes | 998 no | 999 no | 1000 no | 1001 no | 1002 no | 1003 no | 1004 no | 1005 no | 1006 no |
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