79365121 has 4 divisors (see below), whose sum is σ = 86580144. Its totient is φ = 72150100.

The previous prime is 79365119. The next prime is 79365137. The reversal of 79365121 is 12156397.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79365121 - 2¹ = 79365119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79365151) 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, 3607495 + ... + 3607516.

It is an arithmetic number, because the mean of its divisors is an integer number (21645036).

Almost surely, 2^79365121 is an apocalyptic number.

It is an amenable number.

79365121 is a deficient number, since it is larger than the sum of its proper divisors (7215023).

79365121 is a wasteful number, since it uses less digits than its factorization.

79365121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215022.

The product of its digits is 11340, while the sum is 34.

The square root of 79365121 is about 8908.7104005013. The cubic root of 79365121 is about 429.7440716110.

The spelling of 79365121 in words is "seventy-nine million, three hundred sixty-five thousand, one hundred twenty-one".