79808197 has 16 divisors (see below), whose sum is σ = 92897280. Its totient is φ = 67153968.

The previous prime is 79808177. The next prime is 79808207. The reversal of 79808197 is 79180897.

It is not a de Polignac number, because 79808197 - 2¹¹ = 79806149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79808197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79808107) 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, 94704 + ... + 95542.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^79808197 is an apocalyptic number.

It is an amenable number.

79808197 is a deficient number, since it is larger than the sum of its proper divisors (13089083).

79808197 is a wasteful number, since it uses less digits than its factorization.

79808197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 79808197 is about 8933.5433619589. The cubic root of 79808197 is about 430.5423065732.

The spelling of 79808197 in words is "seventy-nine million, eight hundred eight thousand, one hundred ninety-seven".