979745920 has 32 divisors (see below), whose sum is σ = 2342206620. Its totient is φ = 391898112.

The previous prime is 979745911. The next prime is 979745933. The reversal of 979745920 is 29547979.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 855913536 + 123832384 = 29256^2 + 11128^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764787 + ... + 766066.

Almost surely, 2^979745920 is an apocalyptic number.

It is an amenable number.

979745920 is an abundant number, since it is smaller than the sum of its proper divisors (1362460700).

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

979745920 is a wasteful number, since it uses less digits than its factorization.

979745920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530872 (or 1530860 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 979745920 is about 31300.8932779881. The cubic root of 979745920 is about 993.2025392202.

The spelling of 979745920 in words is "nine hundred seventy-nine million, seven hundred forty-five thousand, nine hundred twenty".