9979684 has 48 divisors (see below), whose sum is σ = 20885760. Its totient is φ = 4112640.

The previous prime is 9979681. The next prime is 9979727. The reversal of 9979684 is 4869799.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41637 + ... + 41875.

It is an arithmetic number, because the mean of its divisors is an integer number (435120).

Almost surely, 2^9979684 is an apocalyptic number.

It is an amenable number.

9979684 is an abundant number, since it is smaller than the sum of its proper divisors (10906076).

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

9979684 is a wasteful number, since it uses less digits than its factorization.

9979684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 9979684 is about 3159.0637853643. The cubic root of 9979684 is about 215.2974717720.

The spelling of 9979684 in words is "nine million, nine hundred seventy-nine thousand, six hundred eighty-four".