90432444 has 24 divisors (see below), whose sum is σ = 212623488. Its totient is φ = 29913520.

The previous prime is 90432443. The next prime is 90432449. The reversal of 90432444 is 44423409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90432443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27192 + ... + 30335.

It is an arithmetic number, because the mean of its divisors is an integer number (8859312).

Almost surely, 2^90432444 is an apocalyptic number.

It is an amenable number.

90432444 is an abundant number, since it is smaller than the sum of its proper divisors (122191044).

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

90432444 is a wasteful number, since it uses less digits than its factorization.

90432444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57665 (or 57663 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 90432444 is about 9509.5974678217. The cubic root of 90432444 is about 448.8570898172.

The spelling of 90432444 in words is "ninety million, four hundred thirty-two thousand, four hundred forty-four".