9947820976 has 10 divisors (see below), whose sum is σ = 19273903172. Its totient is φ = 4973910480.

The previous prime is 9947820917. The next prime is 9947820979. The reversal of 9947820976 is 6790287499.

It is not an unprimeable number, because it can be changed into a prime (9947820979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310869390 + ... + 310869421.

Almost surely, 2^9947820976 is an apocalyptic number.

It is an amenable number.

9947820976 is a deficient number, since it is larger than the sum of its proper divisors (9326082196).

9947820976 is a wasteful number, since it uses less digits than its factorization.

9947820976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621738819 (or 621738813 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The square root of 9947820976 is about 99738.7636578677. The cubic root of 9947820976 is about 2150.6809435674.

The spelling of 9947820976 in words is "nine billion, nine hundred forty-seven million, eight hundred twenty thousand, nine hundred seventy-six".