979658779 has 8 divisors (see below), whose sum is σ = 1131584688. Its totient is φ = 838210560.

The previous prime is 979658761. The next prime is 979658821. The reversal of 979658779 is 977856979.

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

It is not a de Polignac number, because 979658779 - 2⁵ = 979658747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979658279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2619222 + ... + 2619595.

It is an arithmetic number, because the mean of its divisors is an integer number (141448086).

Almost surely, 2^979658779 is an apocalyptic number.

979658779 is a deficient number, since it is larger than the sum of its proper divisors (151925909).

979658779 is a wasteful number, since it uses less digits than its factorization.

979658779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238845.

The product of its digits is 60011280, while the sum is 67.

The square root of 979658779 is about 31299.5012580073. The cubic root of 979658779 is about 993.1730923923.

The spelling of 979658779 in words is "nine hundred seventy-nine million, six hundred fifty-eight thousand, seven hundred seventy-nine".