979939979 has 2 divisors, whose sum is σ = 979939980. Its totient is φ = 979939978.

The previous prime is 979939927. The next prime is 979940023.

979939979 is nontrivially palindromic in base 10.

979939979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 979939979 - 2¹² = 979935883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (979939579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489969989 + 489969990.

It is an arithmetic number, because the mean of its divisors is an integer number (489969990).

Almost surely, 2^979939979 is an apocalyptic number.

979939979 is a deficient number, since it is larger than the sum of its proper divisors (1).

979939979 is an equidigital number, since it uses as much as digits as its factorization.

979939979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78121827, while the sum is 71.

The square root of 979939979 is about 31303.9930200606. The cubic root of 979939979 is about 993.2681096788.

The spelling of 979939979 in words is "nine hundred seventy-nine million, nine hundred thirty-nine thousand, nine hundred seventy-nine".