79121337 has 4 divisors (see below), whose sum is σ = 105495120. Its totient is φ = 52747556.

The previous prime is 79121321. The next prime is 79121347. The reversal of 79121337 is 73312197.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 79121337 - 2⁴ = 79121321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79121298 and 79121307.

It is not an unprimeable number, because it can be changed into a prime (79121347) 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, 13186887 + ... + 13186892.

It is an arithmetic number, because the mean of its divisors is an integer number (26373780).

Almost surely, 2^79121337 is an apocalyptic number.

It is an amenable number.

79121337 is a deficient number, since it is larger than the sum of its proper divisors (26373783).

79121337 is a wasteful number, since it uses less digits than its factorization.

79121337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26373782.

The product of its digits is 7938, while the sum is 33.

The square root of 79121337 is about 8895.0175379254. The cubic root of 79121337 is about 429.3036086862.

The spelling of 79121337 in words is "seventy-nine million, one hundred twenty-one thousand, three hundred thirty-seven".