79322121 has 6 divisors (see below), whose sum is σ = 114576410. Its totient is φ = 52881408.

The previous prime is 79322107. The next prime is 79322141. The reversal of 79322121 is 12122397.

It can be written as a sum of positive squares in only one way, i.e., 75951225 + 3370896 = 8715^2 + 1836^2 .

It is not a de Polignac number, because 79322121 - 2⁷ = 79321993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79322141) 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, 4406776 + ... + 4406793.

Almost surely, 2^79322121 is an apocalyptic number.

It is an amenable number.

79322121 is a deficient number, since it is larger than the sum of its proper divisors (35254289).

79322121 is a wasteful number, since it uses less digits than its factorization.

79322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813575 (or 8813572 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 79322121 is about 8906.2967051407. The cubic root of 79322121 is about 429.6664458515. Note that the first 3 decimals are identical.

The spelling of 79322121 in words is "seventy-nine million, three hundred twenty-two thousand, one hundred twenty-one".