79797867 has 4 divisors (see below), whose sum is σ = 106397160. Its totient is φ = 53198576.

The previous prime is 79797859. The next prime is 79797877. The reversal of 79797867 is 76879797.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79797867 - 2³ = 79797859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79797867.

It is not an unprimeable number, because it can be changed into a prime (79797877) 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, 13299642 + ... + 13299647.

It is an arithmetic number, because the mean of its divisors is an integer number (26599290).

Almost surely, 2^79797867 is an apocalyptic number.

79797867 is a deficient number, since it is larger than the sum of its proper divisors (26599293).

79797867 is a wasteful number, since it uses less digits than its factorization.

79797867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26599292.

The product of its digits is 9335088, while the sum is 60.

The square root of 79797867 is about 8932.9651852003. The cubic root of 79797867 is about 430.5237299770.

The spelling of 79797867 in words is "seventy-nine million, seven hundred ninety-seven thousand, eight hundred sixty-seven".