79879992293 has 2 divisors, whose sum is σ = 79879992294. Its totient is φ = 79879992292.

The previous prime is 79879992149. The next prime is 79879992301. The reversal of 79879992293 is 39229997897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67999428289 + 11880564004 = 260767^2 + 108998^2 .

It is a cyclic number.

It is not a de Polignac number, because 79879992293 - 2²⁶ = 79812883429 is a prime.

It is a super-3 number, since 3×79879992293³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79879992293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79879992893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39939996146 + 39939996147.

It is an arithmetic number, because the mean of its divisors is an integer number (39939996147).

Almost surely, 2^79879992293 is an apocalyptic number.

It is an amenable number.

79879992293 is a deficient number, since it is larger than the sum of its proper divisors (1).

79879992293 is an equidigital number, since it uses as much as digits as its factorization.

79879992293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277766496, while the sum is 74.

The spelling of 79879992293 in words is "seventy-nine billion, eight hundred seventy-nine million, nine hundred ninety-two thousand, two hundred ninety-three".