90043972 has 12 divisors (see below), whose sum is σ = 158378220. Its totient is φ = 44793056.

The previous prime is 90043969. The next prime is 90043973. The reversal of 90043972 is 27934009.

It can be written as a sum of positive squares in 2 ways, for example, as 89378116 + 665856 = 9454^2 + 816^2 .

It is not an unprimeable number, because it can be changed into a prime (90043973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56347 + ... + 57922.

It is an arithmetic number, because the mean of its divisors is an integer number (13198185).

Almost surely, 2^90043972 is an apocalyptic number.

It is an amenable number.

90043972 is a deficient number, since it is larger than the sum of its proper divisors (68334248).

90043972 is a wasteful number, since it uses less digits than its factorization.

90043972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114470 (or 114468 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 90043972 is about 9489.1502253890. The cubic root of 90043972 is about 448.2134465986.

The spelling of 90043972 in words is "ninety million, forty-three thousand, nine hundred seventy-two".