989355976 has 16 divisors (see below), whose sum is σ = 2120048640. Its totient is φ = 424009680.

The previous prime is 989355949. The next prime is 989355989. The reversal of 989355976 is 679553989.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8833480 + ... + 8833591.

It is an arithmetic number, because the mean of its divisors is an integer number (132503040).

Almost surely, 2^989355976 is an apocalyptic number.

It is an amenable number.

989355976 is an abundant number, since it is smaller than the sum of its proper divisors (1130692664).

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

989355976 is a wasteful number, since it uses less digits than its factorization.

989355976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17667084 (or 17667080 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 61.

The square root of 989355976 is about 31454.0295669728. The cubic root of 989355976 is about 996.4393286675.

The spelling of 989355976 in words is "nine hundred eighty-nine million, three hundred fifty-five thousand, nine hundred seventy-six".