90439216 has 20 divisors (see below), whose sum is σ = 200258512. Its totient is φ = 38759616.

The previous prime is 90439187. The next prime is 90439229. The reversal of 90439216 is 61293409.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403635 + ... + 403858.

Almost surely, 2^90439216 is an apocalyptic number.

It is an amenable number.

90439216 is an abundant number, since it is smaller than the sum of its proper divisors (109819296).

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

90439216 is a wasteful number, since it uses less digits than its factorization.

90439216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807508 (or 807502 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 90439216 is about 9509.9535224942. The cubic root of 90439216 is about 448.8682937030.

The spelling of 90439216 in words is "ninety million, four hundred thirty-nine thousand, two hundred sixteen".