8489990 has 16 divisors (see below), whose sum is σ = 15946848. Its totient is φ = 3248256.

The previous prime is 8489969. The next prime is 8490019. The reversal of 8489990 is 999848.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18227 + ... + 18686.

It is an arithmetic number, because the mean of its divisors is an integer number (996678).

Almost surely, 2^8489990 is an apocalyptic number.

8489990 is a deficient number, since it is larger than the sum of its proper divisors (7456858).

8489990 is a wasteful number, since it uses less digits than its factorization.

8489990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36943.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 8489990 is about 2913.7587408706. The cubic root of 8489990 is about 204.0026111418.

The spelling of 8489990 in words is "eight million, four hundred eighty-nine thousand, nine hundred ninety".