8991794880 has 112 divisors (see below), whose sum is σ = 31721084640. Its totient is φ = 2397809664.

The previous prime is 8991794863. The next prime is 8991794899. The reversal of 8991794880 is 884971998.

8991794880 is a `hidden beast` number, since 89 + 9 + 1 + 79 + 488 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511719 + ... + 528998.

It is an arithmetic number, because the mean of its divisors is an integer number (283223970).

Almost surely, 2^8991794880 is an apocalyptic number.

8991794880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8991794880 is an abundant number, since it is smaller than the sum of its proper divisors (22729289760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8991794880 is a wasteful number, since it uses less digits than its factorization.

8991794880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040743 (or 1040727 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The square root of 8991794880 is about 94825.0751647474. The cubic root of 8991794880 is about 2079.4515072498.

The spelling of 8991794880 in words is "eight billion, nine hundred ninety-one million, seven hundred ninety-four thousand, eight hundred eighty".