979611517 has 4 divisors (see below), whose sum is σ = 981199836. Its totient is φ = 978023200.

The previous prime is 979611497. The next prime is 979611541. The reversal of 979611517 is 715116979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 715116979 = 73 ⋅9796123.

It can be written as a sum of positive squares in 2 ways, for example, as 177928921 + 801682596 = 13339^2 + 28314^2 .

It is a cyclic number.

It is not a de Polignac number, because 979611517 - 2⁷ = 979611389 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 (979611547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793234 + ... + 794467.

It is an arithmetic number, because the mean of its divisors is an integer number (245299959).

Almost surely, 2^979611517 is an apocalyptic number.

It is an amenable number.

979611517 is a deficient number, since it is larger than the sum of its proper divisors (1588319).

979611517 is a wasteful number, since it uses less digits than its factorization.

979611517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588318.

The product of its digits is 119070, while the sum is 46.

The square root of 979611517 is about 31298.7462528453. The cubic root of 979611517 is about 993.1571208103.

The spelling of 979611517 in words is "nine hundred seventy-nine million, six hundred eleven thousand, five hundred seventeen".