79396121 has 6 divisors (see below), whose sum is σ = 92358810. Its totient is φ = 68053776.

The previous prime is 79396111. The next prime is 79396133. The reversal of 79396121 is 12169397.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44408896 + 34987225 = 6664^2 + 5915^2 .

It is not a de Polignac number, because 79396121 - 2¹⁴ = 79379737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79396111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 810116 + ... + 810213.

It is an arithmetic number, because the mean of its divisors is an integer number (15393135).

Almost surely, 2^79396121 is an apocalyptic number.

It is an amenable number.

79396121 is a deficient number, since it is larger than the sum of its proper divisors (12962689).

79396121 is a wasteful number, since it uses less digits than its factorization.

79396121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620343 (or 1620336 counting only the distinct ones).

The product of its digits is 20412, while the sum is 38.

The square root of 79396121 is about 8910.4501008647. The cubic root of 79396121 is about 429.8000169763.

The spelling of 79396121 in words is "seventy-nine million, three hundred ninety-six thousand, one hundred twenty-one".