90494912 has 28 divisors (see below), whose sum is σ = 180395880. Its totient is φ = 45040896.

The previous prime is 90494879. The next prime is 90494917. The reversal of 90494912 is 21949409.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90494917) 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, 11414 + ... + 17642.

It is an arithmetic number, because the mean of its divisors is an integer number (6442710).

Almost surely, 2^90494912 is an apocalyptic number.

It is an amenable number.

90494912 is a deficient number, since it is larger than the sum of its proper divisors (89900968).

90494912 is a wasteful number, since it uses less digits than its factorization.

90494912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 90494912 is about 9512.8813721185. The cubic root of 90494912 is about 448.9604183341.

The spelling of 90494912 in words is "ninety million, four hundred ninety-four thousand, nine hundred twelve".