90881044 has 6 divisors (see below), whose sum is σ = 159041834. Its totient is φ = 45440520.

The previous prime is 90881029. The next prime is 90881069. The reversal of 90881044 is 44018809.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 24621444 = 8140^2 + 4962^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 11360127 + ... + 11360134.

Almost surely, 2^90881044 is an apocalyptic number.

It is an amenable number.

90881044 is a deficient number, since it is larger than the sum of its proper divisors (68160790).

90881044 is a wasteful number, since it uses less digits than its factorization.

90881044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22720265 (or 22720263 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 90881044 is about 9533.1549866768. The cubic root of 90881044 is about 449.5980674448.

The spelling of 90881044 in words is "ninety million, eight hundred eighty-one thousand, forty-four".