986439972 has 72 divisors (see below), whose sum is σ = 2702219520. Its totient is φ = 279236160.

The previous prime is 986439919. The next prime is 986439983. The reversal of 986439972 is 279934689.

986439972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 56397 + ... + 71787.

Almost surely, 2^986439972 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 986439972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351109760).

986439972 is an abundant number, since it is smaller than the sum of its proper divisors (1715779548).

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

986439972 is a wasteful number, since it uses less digits than its factorization.

986439972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15521 (or 15512 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 57.

The square root of 986439972 is about 31407.6419363186. The cubic root of 986439972 is about 995.4594048670.

The spelling of 986439972 in words is "nine hundred eighty-six million, four hundred thirty-nine thousand, nine hundred seventy-two".