9008990 has 16 divisors (see below), whose sum is σ = 16254000. Its totient is φ = 3595200.

The previous prime is 9008981. The next prime is 9009017. The reversal of 9008990 is 998009.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9008990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5261 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (1015875).

Almost surely, 2^9008990 is an apocalyptic number.

9008990 is a deficient number, since it is larger than the sum of its proper divisors (7245010).

9008990 is a wasteful number, since it uses less digits than its factorization.

9008990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107.

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

The square root of 9008990 is about 3001.4979593530. The cubic root of 9008990 is about 208.0776183446.

The spelling of 9008990 in words is "nine million, eight thousand, nine hundred ninety".