90043984 has 20 divisors (see below), whose sum is σ = 175117140. Its totient is φ = 44852480.

The previous prime is 90043973. The next prime is 90044083. The reversal of 90043984 is 48934009.

It can be written as a sum of positive squares in 2 ways, for example, as 31674384 + 58369600 = 5628^2 + 7640^2 .

It is a congruent number.

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, 6157 + ... + 14764.

It is an arithmetic number, because the mean of its divisors is an integer number (8755857).

Almost surely, 2^90043984 is an apocalyptic number.

It is an amenable number.

90043984 is a deficient number, since it is larger than the sum of its proper divisors (85073156).

90043984 is a wasteful number, since it uses less digits than its factorization.

90043984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21198 (or 21192 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 90043984 is about 9489.1508576901. The cubic root of 90043984 is about 448.2134665095.

The spelling of 90043984 in words is "ninety million, forty-three thousand, nine hundred eighty-four".