8997911772 has 24 divisors (see below), whose sum is σ = 21070929936. Its totient is φ = 2988475008.

The previous prime is 8997911771. The next prime is 8997911777. The reversal of 8997911772 is 2771197998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997911771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350153 + ... + 1356800.

It is an arithmetic number, because the mean of its divisors is an integer number (877955414).

Almost surely, 2^8997911772 is an apocalyptic number.

It is an amenable number.

8997911772 is an abundant number, since it is smaller than the sum of its proper divisors (12073018164).

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

8997911772 is a wasteful number, since it uses less digits than its factorization.

8997911772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707237 (or 2707235 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 60.

The square root of 8997911772 is about 94857.3232386409. The cubic root of 8997911772 is about 2079.9229332270.

The spelling of 8997911772 in words is "eight billion, nine hundred ninety-seven million, nine hundred eleven thousand, seven hundred seventy-two".