90900804 has 24 divisors (see below), whose sum is σ = 218944768. Its totient is φ = 29322720.

The previous prime is 90900791. The next prime is 90900809. The reversal of 90900804 is 40800909.

It is not an unprimeable number, because it can be changed into a prime (90900809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121807 + ... + 122550.

Almost surely, 2^90900804 is an apocalyptic number.

It is an amenable number.

90900804 is an abundant number, since it is smaller than the sum of its proper divisors (128043964).

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

90900804 is a wasteful number, since it uses less digits than its factorization.

90900804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244395 (or 244393 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 90900804 is about 9534.1913133731. The cubic root of 90900804 is about 449.6306500151.

The spelling of 90900804 in words is "ninety million, nine hundred thousand, eight hundred four".