79275797 has 4 divisors (see below), whose sum is σ = 79294476. Its totient is φ = 79257120.

The previous prime is 79275787. The next prime is 79275799. The reversal of 79275797 is 79757297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79757297 = 2273 ⋅35089.

It can be written as a sum of positive squares in 2 ways, for example, as 37466641 + 41809156 = 6121^2 + 6466^2 .

It is a cyclic number.

It is not a de Polignac number, because 79275797 - 2¹⁰ = 79274773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79275799) 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, 443 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (19823619).

Almost surely, 2^79275797 is an apocalyptic number.

It is an amenable number.

79275797 is a deficient number, since it is larger than the sum of its proper divisors (18679).

79275797 is a wasteful number, since it uses less digits than its factorization.

79275797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18678.

The product of its digits is 1944810, while the sum is 53.

The square root of 79275797 is about 8903.6956933624. The cubic root of 79275797 is about 429.5827880435.

The spelling of 79275797 in words is "seventy-nine million, two hundred seventy-five thousand, seven hundred ninety-seven".