8801000991 has 12 divisors (see below), whose sum is σ = 13265277168. Its totient is φ = 5612232384.

The previous prime is 8801000983. The next prime is 8801001017. The reversal of 8801000991 is 1990001088.

It is not a de Polignac number, because 8801000991 - 2³ = 8801000983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8801000491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21258250 + ... + 21258663.

It is an arithmetic number, because the mean of its divisors is an integer number (1105439764).

Almost surely, 2^8801000991 is an apocalyptic number.

8801000991 is a deficient number, since it is larger than the sum of its proper divisors (4464276177).

8801000991 is a wasteful number, since it uses less digits than its factorization.

8801000991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42516942 (or 42516939 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 8801000991 is about 93813.6503447126. The cubic root of 8801000991 is about 2064.6385084831.

The spelling of 8801000991 in words is "eight billion, eight hundred one million, nine hundred ninety-one", and thus it is an aban number.