79970113 has 4 divisors (see below), whose sum is σ = 81065668. Its totient is φ = 78874560.

The previous prime is 79970063. The next prime is 79970119. The reversal of 79970113 is 31107997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50027329 + 29942784 = 7073^2 + 5472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79970113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79970119) 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, 547668 + ... + 547813.

It is an arithmetic number, because the mean of its divisors is an integer number (20266417).

Almost surely, 2^79970113 is an apocalyptic number.

79970113 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

79970113 is a deficient number, since it is larger than the sum of its proper divisors (1095555).

79970113 is a wasteful number, since it uses less digits than its factorization.

79970113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095554.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 79970113 is about 8942.6010198376. The cubic root of 79970113 is about 430.8332733317.

The spelling of 79970113 in words is "seventy-nine million, nine hundred seventy thousand, one hundred thirteen".