990908 has 12 divisors (see below), whose sum is σ = 1744512. Its totient is φ = 492480.

The previous prime is 990893. The next prime is 990917. The reversal of 990908 is 809099.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116 + ... + 1412.

It is an arithmetic number, because the mean of its divisors is an integer number (145376).

2⁹⁹⁰⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

990908 is a deficient number, since it is larger than the sum of its proper divisors (753604).

990908 is a wasteful number, since it uses less digits than its factorization.

990908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 990908 is about 995.4436196993. The cubic root of 990908 is about 99.6960101716.

The spelling of 990908 in words is "nine hundred ninety thousand, nine hundred eight".