90591944 has 16 divisors (see below), whose sum is σ = 170081520. Its totient is φ = 45236880.

The previous prime is 90591923. The next prime is 90591961. The reversal of 90591944 is 44919509.

It is a happy 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, 494 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (10630095).

Almost surely, 2^90591944 is an apocalyptic number.

It is an amenable number.

90591944 is a deficient number, since it is larger than the sum of its proper divisors (79489576).

90591944 is a wasteful number, since it uses less digits than its factorization.

90591944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14780 (or 14776 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 90591944 is about 9517.9800378021. The cubic root of 90591944 is about 449.1208250187.

The spelling of 90591944 in words is "ninety million, five hundred ninety-one thousand, nine hundred forty-four".