90478938964 has 12 divisors (see below), whose sum is σ = 158365908288. Its totient is φ = 45231536600.

The previous prime is 90478938943. The next prime is 90478938971. The reversal of 90478938964 is 46983987409.

It is a self number, because there is not a number n which added to its sum of digits gives 90478938964.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957522 + ... + 2003209.

It is an arithmetic number, because the mean of its divisors is an integer number (13197159024).

Almost surely, 2^90478938964 is an apocalyptic number.

It is an amenable number.

90478938964 is a deficient number, since it is larger than the sum of its proper divisors (67886969324).

90478938964 is a wasteful number, since it uses less digits than its factorization.

90478938964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966446 (or 3966444 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 90478938964 in words is "ninety billion, four hundred seventy-eight million, nine hundred thirty-eight thousand, nine hundred sixty-four".