9679979 has 4 divisors (see below), whose sum is σ = 9885984. Its totient is φ = 9473976.

The previous prime is 9679951. The next prime is 9679981. The reversal of 9679979 is 9799769.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9679979 - 2¹⁶ = 9614443 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9679909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102932 + ... + 103025.

It is an arithmetic number, because the mean of its divisors is an integer number (2471496).

Almost surely, 2^9679979 is an apocalyptic number.

9679979 is a deficient number, since it is larger than the sum of its proper divisors (206005).

9679979 is a wasteful number, since it uses less digits than its factorization.

9679979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206004.

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

The square root of 9679979 is about 3111.2664623912. The cubic root of 9679979 is about 213.1202932372.

The spelling of 9679979 in words is "nine million, six hundred seventy-nine thousand, nine hundred seventy-nine".