8809991832 has 32 divisors (see below), whose sum is σ = 22335194880. Its totient is φ = 2895301920.

The previous prime is 8809991807. The next prime is 8809991837. The reversal of 8809991832 is 2381999088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8809991837) 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, 2583388 + ... + 2586795.

It is an arithmetic number, because the mean of its divisors is an integer number (697974840).

Almost surely, 2^8809991832 is an apocalyptic number.

It is an amenable number.

8809991832 is an abundant number, since it is smaller than the sum of its proper divisors (13525203048).

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

8809991832 is a wasteful number, since it uses less digits than its factorization.

8809991832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170263 (or 5170259 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 57.

The square root of 8809991832 is about 93861.5567311772. The cubic root of 8809991832 is about 2065.3413269873.

The spelling of 8809991832 in words is "eight billion, eight hundred nine million, nine hundred ninety-one thousand, eight hundred thirty-two".