979985589979 has 16 divisors (see below), whose sum is σ = 1106786488320. Its totient is φ = 859516944160.

The previous prime is 979985589943. The next prime is 979985590021.

979985589979 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 979985589979 - 2⁹ = 979985589467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979985539979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758299 + ... + 1592164.

It is an arithmetic number, because the mean of its divisors is an integer number (69174155520).

Almost surely, 2^979985589979 is an apocalyptic number.

979985589979 is a deficient number, since it is larger than the sum of its proper divisors (126800898341).

979985589979 is a wasteful number, since it uses less digits than its factorization.

979985589979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351810.

The product of its digits is 41664974400, while the sum is 94.

The spelling of 979985589979 in words is "nine hundred seventy-nine billion, nine hundred eighty-five million, five hundred eighty-nine thousand, nine hundred seventy-nine".