79313369 has 4 divisors (see below), whose sum is σ = 79445940. Its totient is φ = 79180800.

The previous prime is 79313357. The next prime is 79313383. The reversal of 79313369 is 96331397.

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 36240400 + 43072969 = 6020^2 + 6563^2 .

It is a cyclic number.

It is not a de Polignac number, because 79313369 - 2²⁴ = 62536153 is a prime.

It is a super-2 number, since 2×79313369² = 12581221004260322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79313309) 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, 65384 + ... + 66585.

It is an arithmetic number, because the mean of its divisors is an integer number (19861485).

Almost surely, 2^79313369 is an apocalyptic number.

It is an amenable number.

79313369 is a deficient number, since it is larger than the sum of its proper divisors (132571).

79313369 is a wasteful number, since it uses less digits than its factorization.

79313369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132570.

The product of its digits is 91854, while the sum is 41.

The square root of 79313369 is about 8905.8053538128. The cubic root of 79313369 is about 429.6506428657.

The spelling of 79313369 in words is "seventy-nine million, three hundred thirteen thousand, three hundred sixty-nine".