90855804 has 24 divisors (see below), whose sum is σ = 228304720. Its totient is φ = 27955584.

The previous prime is 90855781. The next prime is 90855827. The reversal of 90855804 is 40855809.

It is an interprime number because it is at equal distance from previous prime (90855781) and next prime (90855827).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 291049 + ... + 291360.

Almost surely, 2^90855804 is an apocalyptic number.

It is an amenable number.

90855804 is an abundant number, since it is smaller than the sum of its proper divisors (137448916).

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

90855804 is a wasteful number, since it uses less digits than its factorization.

90855804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582429 (or 582427 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 90855804 is about 9531.8310937616. The cubic root of 90855804 is about 449.5564419477.

The spelling of 90855804 in words is "ninety million, eight hundred fifty-five thousand, eight hundred four".