79797397 has 16 divisors (see below), whose sum is σ = 85968000. Its totient is φ = 73846080.

The previous prime is 79797391. The next prime is 79797401. The reversal of 79797397 is 79379797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79797397 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 (79797391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200803 + ... + 201199.

It is an arithmetic number, because the mean of its divisors is an integer number (5373000).

Almost surely, 2^79797397 is an apocalyptic number.

It is an amenable number.

79797397 is a deficient number, since it is larger than the sum of its proper divisors (6170603).

79797397 is a wasteful number, since it uses less digits than its factorization.

79797397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 5250987, while the sum is 58.

The square root of 79797397 is about 8932.9388781072. The cubic root of 79797397 is about 430.5228847308.

It can be divided in two parts, 7979 and 7397, that added together give a square (15376 = 124²).

The spelling of 79797397 in words is "seventy-nine million, seven hundred ninety-seven thousand, three hundred ninety-seven".