79133137 has 2 divisors, whose sum is σ = 79133138. Its totient is φ = 79133136.

The previous prime is 79133129. The next prime is 79133161. The reversal of 79133137 is 73133197.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 33651601 = 6744^2 + 5801^2 .

It is an emirp because it is prime and its reverse (73133197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79133137 - 2³ = 79133129 is a prime.

It is not a weakly prime, because it can be changed into another prime (79133167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39566568 + 39566569.

It is an arithmetic number, because the mean of its divisors is an integer number (39566569).

Almost surely, 2^79133137 is an apocalyptic number.

It is an amenable number.

79133137 is a deficient number, since it is larger than the sum of its proper divisors (1).

79133137 is an equidigital number, since it uses as much as digits as its factorization.

79133137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11907, while the sum is 34.

The square root of 79133137 is about 8895.6808058743. The cubic root of 79133137 is about 429.3249494562.

The spelling of 79133137 in words is "seventy-nine million, one hundred thirty-three thousand, one hundred thirty-seven".