9979976 has 32 divisors (see below), whose sum is σ = 19820160. Its totient is φ = 4701312.

The previous prime is 9979967. The next prime is 9979993. The reversal of 9979976 is 6799799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13061 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (619380).

Almost surely, 2^9979976 is an apocalyptic number.

It is an amenable number.

9979976 is a deficient number, since it is larger than the sum of its proper divisors (9840184).

9979976 is a wasteful number, since it uses less digits than its factorization.

9979976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 841 counting only the distinct ones).

The product of its digits is 1928934, while the sum is 56.

The square root of 9979976 is about 3159.1100012504. The cubic root of 9979976 is about 215.2995715796.

The spelling of 9979976 in words is "nine million, nine hundred seventy-nine thousand, nine hundred seventy-six".