90055884 has 24 divisors (see below), whose sum is σ = 210955248. Its totient is φ = 29900800.

The previous prime is 90055871. The next prime is 90055921. The reversal of 90055884 is 48855009.

It is a super-2 number, since 2×90055884² = 16220124486042912, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 11517 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (8789802).

Almost surely, 2^90055884 is an apocalyptic number.

It is an amenable number.

90055884 is an abundant number, since it is smaller than the sum of its proper divisors (120899364).

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

90055884 is a wasteful number, since it uses less digits than its factorization.

90055884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29465 (or 29463 counting only the distinct ones).

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

The square root of 90055884 is about 9489.7778688439. Note that the first 3 decimals coincide. The cubic root of 90055884 is about 448.2332105837.

The spelling of 90055884 in words is "ninety million, fifty-five thousand, eight hundred eighty-four".