989898989899032 has 64 divisors (see below), whose sum is σ = 2750322295557600. Its totient is φ = 329893984465920.

The previous prime is 989898989899031. The next prime is 989898989899049. The reversal of 989898989899032 is 230998989898989.

It is a Harshad number since it is a multiple of its sum of digits (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989898989899031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501411853 + ... + 503382204.

Almost surely, 2^{989898989899032} is an apocalyptic number.

It is an amenable number.

989898989899032 is an abundant number, since it is smaller than the sum of its proper divisors (1760423305658568).

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

989898989899032 is a wasteful number, since it uses less digits than its factorization.

989898989899032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004798633 (or 1004798623 counting only the distinct ones).

The product of its (nonzero) digits is 940369969152, while the sum is 108.

The spelling of 989898989899032 in words is "nine hundred eighty-nine trillion, eight hundred ninety-eight billion, nine hundred eighty-nine million, eight hundred ninety-nine thousand, thirty-two".