989520012 has 72 divisors (see below), whose sum is σ = 2709848960. Its totient is φ = 304443360.

The previous prime is 989519987. The next prime is 989520043. The reversal of 989520012 is 210025989.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72837 + ... + 85347.

Almost surely, 2^989520012 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 989520012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354924480).

989520012 is an abundant number, since it is smaller than the sum of its proper divisors (1720328948).

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

989520012 is a wasteful number, since it uses less digits than its factorization.

989520012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12560 (or 12529 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 989520012 is about 31456.6370103354. The cubic root of 989520012 is about 996.4943957661.

The spelling of 989520012 in words is "nine hundred eighty-nine million, five hundred twenty thousand, twelve".