979977575 has 6 divisors (see below), whose sum is σ = 1215172224. Its totient is φ = 783982040.

The previous prime is 979977569. The next prime is 979977601. The reversal of 979977575 is 575779979.

It is not a de Polignac number, because 979977575 - 2⁶ = 979977511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19599527 + ... + 19599576.

It is an arithmetic number, because the mean of its divisors is an integer number (202528704).

Almost surely, 2^979977575 is an apocalyptic number.

979977575 is a deficient number, since it is larger than the sum of its proper divisors (235194649).

979977575 is a wasteful number, since it uses less digits than its factorization.

979977575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39199113 (or 39199108 counting only the distinct ones).

The product of its digits is 43758225, while the sum is 65.

The square root of 979977575 is about 31304.5935127738. The cubic root of 979977575 is about 993.2808119636.

The spelling of 979977575 in words is "nine hundred seventy-nine million, nine hundred seventy-seven thousand, five hundred seventy-five".