79904897 has 4 divisors (see below), whose sum is σ = 80007216. Its totient is φ = 79802580.

The previous prime is 79904893. The next prime is 79904911. The reversal of 79904897 is 79840997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79840997 = 137 ⋅582781.

It is a cyclic number.

It is not a de Polignac number, because 79904897 - 2² = 79904893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79904893) 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, 49979 + ... + 51552.

It is an arithmetic number, because the mean of its divisors is an integer number (20001804).

Almost surely, 2^79904897 is an apocalyptic number.

It is an amenable number.

79904897 is a deficient number, since it is larger than the sum of its proper divisors (102319).

79904897 is a wasteful number, since it uses less digits than its factorization.

79904897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102318.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 79904897 is about 8938.9539097145. The cubic root of 79904897 is about 430.7161259668.

The spelling of 79904897 in words is "seventy-nine million, nine hundred four thousand, eight hundred ninety-seven".