90975944 has 16 divisors (see below), whose sum is σ = 171247500. Its totient is φ = 45309952.

The previous prime is 90975919. The next prime is 90975947. The reversal of 90975944 is 44957909.

It can be written as a sum of positive squares in 2 ways, for example, as 90973444 + 2500 = 9538^2 + 50^2 .

It is a super-2 number, since 2×90975944² = 16553244773382272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90975947) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20069 + ... + 24180.

Almost surely, 2^90975944 is an apocalyptic number.

It is an amenable number.

90975944 is a deficient number, since it is larger than the sum of its proper divisors (80271556).

90975944 is a wasteful number, since it uses less digits than its factorization.

90975944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44512 (or 44508 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 90975944 is about 9538.1310538281. The cubic root of 90975944 is about 449.7545064267.

It can be divided in two parts, 90975 and 944, that added together give a palindrome (91919).

The spelling of 90975944 in words is "ninety million, nine hundred seventy-five thousand, nine hundred forty-four".