8991045076 has 24 divisors (see below), whose sum is σ = 16956659720. Its totient is φ = 4146774912.

The previous prime is 8991045067. The next prime is 8991045097. The reversal of 8991045076 is 6705401998.

It can be written as a sum of positive squares in 4 ways, for example, as 39992976 + 8951052100 = 6324^2 + 94610^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13810 + ... + 134806.

Almost surely, 2^8991045076 is an apocalyptic number.

It is an amenable number.

8991045076 is a deficient number, since it is larger than the sum of its proper divisors (7965614644).

8991045076 is a wasteful number, since it uses less digits than its factorization.

8991045076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122443 (or 122441 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 8991045076 is about 94821.1214656313. The cubic root of 8991045076 is about 2079.3937055013.

The spelling of 8991045076 in words is "eight billion, nine hundred ninety-one million, forty-five thousand, seventy-six".