979909979 has 8 divisors (see below), whose sum is σ = 1003557600. Its totient is φ = 956536000.

The previous prime is 979909921. The next prime is 979909981.

979909979 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979909979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979909279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61154 + ... + 75495.

It is an arithmetic number, because the mean of its divisors is an integer number (125444700).

Almost surely, 2^979909979 is an apocalyptic number.

979909979 is a deficient number, since it is larger than the sum of its proper divisors (23647621).

979909979 is a wasteful number, since it uses less digits than its factorization.

979909979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136821.

The product of its (nonzero) digits is 26040609, while the sum is 68.

The square root of 979909979 is about 31303.5138442955. The cubic root of 979909979 is about 993.2579735657.

The spelling of 979909979 in words is "nine hundred seventy-nine million, nine hundred nine thousand, nine hundred seventy-nine".