89731944 has 96 divisors (see below), whose sum is σ = 252088200. Its totient is φ = 28815360.

The previous prime is 89731931. The next prime is 89731951. The reversal of 89731944 is 44913798.

It can be written as a sum of positive squares in 4 ways, for example, as 8191044 + 81540900 = 2862^2 + 9030^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89731944.

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 23 ways as a sum of consecutive naturals, for example, 333442 + ... + 333710.

Almost surely, 2^89731944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89731944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126044100).

89731944 is an abundant number, since it is smaller than the sum of its proper divisors (162356256).

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

89731944 is a wasteful number, since it uses less digits than its factorization.

89731944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 428 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 89731944 is about 9472.6946535819. The cubic root of 89731944 is about 447.6951183497.

The spelling of 89731944 in words is "eighty-nine million, seven hundred thirty-one thousand, nine hundred forty-four".