989340859584 has 672 divisors, whose sum is σ = 3796402701312. Its totient is φ = 238436352000.

The previous prime is 989340859579. The next prime is 989340859597. The reversal of 989340859584 is 485958043989.

989340859584 is a `hidden beast` number, since 9 + 8 + 9 + 34 + 0 + 8 + 5 + 9 + 584 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53523624 + ... + 53542104.

Almost surely, 2^989340859584 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 989340859584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898201350656).

989340859584 is an abundant number, since it is smaller than the sum of its proper divisors (2807061841728).

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

989340859584 is a wasteful number, since it uses less digits than its factorization.

989340859584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18605 (or 18592 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 72.

The spelling of 989340859584 in words is "nine hundred eighty-nine billion, three hundred forty million, eight hundred fifty-nine thousand, five hundred eighty-four".