9979915368 has 16 divisors (see below), whose sum is σ = 24949788480. Its totient is φ = 3326638448.

The previous prime is 9979915301. The next prime is 9979915373. The reversal of 9979915368 is 8635199799.

It is a junction number, because it is equal to n+sod(n) for n = 9979915299 and 9979915308.

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, 207914880 + ... + 207914927.

It is an arithmetic number, because the mean of its divisors is an integer number (1559361780).

Almost surely, 2^9979915368 is an apocalyptic number.

It is an amenable number.

9979915368 is an abundant number, since it is smaller than the sum of its proper divisors (14969873112).

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

9979915368 is a wasteful number, since it uses less digits than its factorization.

9979915368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415829816 (or 415829812 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 66.

The square root of 9979915368 is about 99899.5263652436. The cubic root of 9979915368 is about 2152.9913557083.

The spelling of 9979915368 in words is "nine billion, nine hundred seventy-nine million, nine hundred fifteen thousand, three hundred sixty-eight".