90401956 has 6 divisors (see below), whose sum is σ = 158203430. Its totient is φ = 45200976.

The previous prime is 90401947. The next prime is 90401977. The reversal of 90401956 is 65910409.

It can be written as a sum of positive squares in only one way, i.e., 69388900 + 21013056 = 8330^2 + 4584^2 .

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, 11300241 + ... + 11300248.

Almost surely, 2^90401956 is an apocalyptic number.

It is an amenable number.

90401956 is a deficient number, since it is larger than the sum of its proper divisors (67801474).

90401956 is a wasteful number, since it uses less digits than its factorization.

90401956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600493 (or 22600491 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 90401956 is about 9507.9943205705. The cubic root of 90401956 is about 448.8066422399.

The spelling of 90401956 in words is "ninety million, four hundred one thousand, nine hundred fifty-six".