989013888 has 128 divisors (see below), whose sum is σ = 2955837600. Its totient is φ = 329577984.

The previous prime is 989013841. The next prime is 989013901. The reversal of 989013888 is 888310989.

989013888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278170 + ... + 281702.

Almost surely, 2^989013888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989013888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477918800).

989013888 is an abundant number, since it is smaller than the sum of its proper divisors (1966823712).

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

989013888 is an frugal number, since it uses more digits than its factorization.

989013888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3538 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 989013888 is about 31448.5911926115. The cubic root of 989013888 is about 996.3244696952.

The spelling of 989013888 in words is "nine hundred eighty-nine million, thirteen thousand, eight hundred eighty-eight".