79198253 has 2 divisors, whose sum is σ = 79198254. Its totient is φ = 79198252.

The previous prime is 79198199. The next prime is 79198261. The reversal of 79198253 is 35289197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78623689 + 574564 = 8867^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 79198253 - 2²⁰ = 78149677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79198283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39599126 + 39599127.

It is an arithmetic number, because the mean of its divisors is an integer number (39599127).

Almost surely, 2^79198253 is an apocalyptic number.

It is an amenable number.

79198253 is a deficient number, since it is larger than the sum of its proper divisors (1).

79198253 is an equidigital number, since it uses as much as digits as its factorization.

79198253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 79198253 is about 8899.3400317102. The cubic root of 79198253 is about 429.4426761969.

The spelling of 79198253 in words is "seventy-nine million, one hundred ninety-eight thousand, two hundred fifty-three".