90408604 has 48 divisors (see below), whose sum is σ = 187125120. Its totient is φ = 37679040.

The previous prime is 90408599. The next prime is 90408641. The reversal of 90408604 is 40680409.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 101947 + ... + 102829.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^90408604 is an apocalyptic number.

It is an amenable number.

90408604 is an abundant number, since it is smaller than the sum of its proper divisors (96716516).

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

90408604 is a wasteful number, since it uses less digits than its factorization.

90408604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 90408604 is about 9508.3439146888. The cubic root of 90408604 is about 448.8176434526.

The spelling of 90408604 in words is "ninety million, four hundred eight thousand, six hundred four".