989816872 has 16 divisors (see below), whose sum is σ = 2024625600. Its totient is φ = 449916720.

The previous prime is 989816869. The next prime is 989816897. The reversal of 989816872 is 278618989.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5623872 + ... + 5624047.

It is an arithmetic number, because the mean of its divisors is an integer number (126539100).

Almost surely, 2^989816872 is an apocalyptic number.

It is an amenable number.

989816872 is an abundant number, since it is smaller than the sum of its proper divisors (1034808728).

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

989816872 is a wasteful number, since it uses less digits than its factorization.

989816872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247936 (or 11247932 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 58.

The square root of 989816872 is about 31461.3552155657. The cubic root of 989816872 is about 996.5940365836.

The spelling of 989816872 in words is "nine hundred eighty-nine million, eight hundred sixteen thousand, eight hundred seventy-two".