979911173 has 2 divisors, whose sum is σ = 979911174. Its totient is φ = 979911172.

The previous prime is 979911167. The next prime is 979911221. The reversal of 979911173 is 371119979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 925254724 + 54656449 = 30418^2 + 7393^2 .

It is a cyclic number.

It is not a de Polignac number, because 979911173 - 2²⁰ = 978862597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979911143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489955586 + 489955587.

It is an arithmetic number, because the mean of its divisors is an integer number (489955587).

Almost surely, 2^979911173 is an apocalyptic number.

It is an amenable number.

979911173 is a deficient number, since it is larger than the sum of its proper divisors (1).

979911173 is an equidigital number, since it uses as much as digits as its factorization.

979911173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107163, while the sum is 47.

The square root of 979911173 is about 31303.5329156311. The cubic root of 979911173 is about 993.2583769869.

The spelling of 979911173 in words is "nine hundred seventy-nine million, nine hundred eleven thousand, one hundred seventy-three".