9996979996 has 24 divisors (see below), whose sum is σ = 17559954720. Its totient is φ = 4979884800.

The previous prime is 9996979987. The next prime is 9996979997. The reversal of 9996979996 is 6999796999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996979997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332576 + ... + 1340056.

It is an arithmetic number, because the mean of its divisors is an integer number (731664780).

Almost surely, 2^9996979996 is an apocalyptic number.

It is an amenable number.

9996979996 is a deficient number, since it is larger than the sum of its proper divisors (7562974724).

9996979996 is a wasteful number, since it uses less digits than its factorization.

9996979996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685 (or 8683 counting only the distinct ones).

The product of its digits is 1205308188, while the sum is 82.

The square root of 9996979996 is about 99984.8988397748. The cubic root of 9996979996 is about 2154.2177881495.

The spelling of 9996979996 in words is "nine billion, nine hundred ninety-six million, nine hundred seventy-nine thousand, nine hundred ninety-six".