989632079884 has 24 divisors (see below), whose sum is σ = 1980495901440. Its totient is φ = 423864089616.

The previous prime is 989632079867. The next prime is 989632079963. The reversal of 989632079884 is 488970236989.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10951894 + ... + 11041885.

It is an arithmetic number, because the mean of its divisors is an integer number (82520662560).

Almost surely, 2^989632079884 is an apocalyptic number.

It is an amenable number.

989632079884 is an abundant number, since it is smaller than the sum of its proper divisors (990863821556).

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

989632079884 is a wasteful number, since it uses less digits than its factorization.

989632079884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21995397 (or 21995395 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 73.

The spelling of 989632079884 in words is "nine hundred eighty-nine billion, six hundred thirty-two million, seventy-nine thousand, eight hundred eighty-four".