9979747392 has 28 divisors (see below), whose sum is σ = 26404748816. Its totient is φ = 3326582400.

The previous prime is 9979747387. The next prime is 9979747417. The reversal of 9979747392 is 2937479799.

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, 25988734 + ... + 25989117.

Almost surely, 2^9979747392 is an apocalyptic number.

It is an amenable number.

9979747392 is an abundant number, since it is smaller than the sum of its proper divisors (16425001424).

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

9979747392 is a wasteful number, since it uses less digits than its factorization.

9979747392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51977866 (or 51977856 counting only the distinct ones).

The product of its digits is 54010152, while the sum is 66.

The square root of 9979747392 is about 99898.6856369992. The cubic root of 9979747392 is about 2152.9792763505.

The spelling of 9979747392 in words is "nine billion, nine hundred seventy-nine million, seven hundred forty-seven thousand, three hundred ninety-two".