90773992 has 8 divisors (see below), whose sum is σ = 170201250. Its totient is φ = 45386992.

The previous prime is 90773981. The next prime is 90773993. The reversal of 90773992 is 29937709.

It can be written as a sum of positive squares in only one way, i.e., 77334436 + 13439556 = 8794^2 + 3666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90773993) 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 as a sum of consecutive naturals, namely, 5673367 + ... + 5673382.

Almost surely, 2^90773992 is an apocalyptic number.

It is an amenable number.

90773992 is a deficient number, since it is larger than the sum of its proper divisors (79427258).

90773992 is a wasteful number, since it uses less digits than its factorization.

90773992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11346755 (or 11346751 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 90773992 is about 9527.5386118346. The cubic root of 90773992 is about 449.4214655899.

The spelling of 90773992 in words is "ninety million, seven hundred seventy-three thousand, nine hundred ninety-two".