90077904 has 60 divisors (see below), whose sum is σ = 288109536. Its totient is φ = 25736256.

The previous prime is 90077893. The next prime is 90077921. The reversal of 90077904 is 40977009.

It is a super-2 number, since 2×90077904² = 16228057578066432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43674 + ... + 45689.

Almost surely, 2^90077904 is an apocalyptic number.

It is an amenable number.

90077904 is an abundant number, since it is smaller than the sum of its proper divisors (198031632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90077904 is a wasteful number, since it uses less digits than its factorization.

90077904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89384 (or 89375 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 90077904 is about 9490.9379936864. The cubic root of 90077904 is about 448.2697408302.

The spelling of 90077904 in words is "ninety million, seventy-seven thousand, nine hundred four".