979385999 has 16 divisors (see below), whose sum is σ = 1035555840. Its totient is φ = 924924000.

The previous prime is 979385987. The next prime is 979386019. The reversal of 979385999 is 999583979.

It is a cyclic number.

It is not a de Polignac number, because 979385999 - 2²⁸ = 710950543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979385399) 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, 267914 + ... + 271544.

It is an arithmetic number, because the mean of its divisors is an integer number (64722240).

Almost surely, 2^979385999 is an apocalyptic number.

979385999 is a deficient number, since it is larger than the sum of its proper divisors (56169841).

979385999 is a wasteful number, since it uses less digits than its factorization.

979385999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862.

The product of its digits is 49601160, while the sum is 68.

The square root of 979385999 is about 31295.1433772079. The cubic root of 979385999 is about 993.0809028426.

The spelling of 979385999 in words is "nine hundred seventy-nine million, three hundred eighty-five thousand, nine hundred ninety-nine".