9979718 has 8 divisors (see below), whose sum is σ = 17108112. Its totient is φ = 4277016.

The previous prime is 9979681. The next prime is 9979727. The reversal of 9979718 is 8179799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 356405 + ... + 356432.

It is an arithmetic number, because the mean of its divisors is an integer number (2138514).

Almost surely, 2^9979718 is an apocalyptic number.

9979718 is a deficient number, since it is larger than the sum of its proper divisors (7128394).

9979718 is a wasteful number, since it uses less digits than its factorization.

9979718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712846.

The product of its digits is 285768, while the sum is 50.

The square root of 9979718 is about 3159.0691667008. The cubic root of 9979718 is about 215.2977162722.

The spelling of 9979718 in words is "nine million, nine hundred seventy-nine thousand, seven hundred eighteen".