79310897 has 4 divisors (see below), whose sum is σ = 79340580. Its totient is φ = 79281216.

The previous prime is 79310893. The next prime is 79310939. The reversal of 79310897 is 79801397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79801397 = 13 ⋅6138569.

It can be written as a sum of positive squares in 2 ways, for example, as 36917776 + 42393121 = 6076^2 + 6511^2 .

It is a cyclic number.

It is not a de Polignac number, because 79310897 - 2² = 79310893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79310893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10388 + ... + 16325.

It is an arithmetic number, because the mean of its divisors is an integer number (19835145).

Almost surely, 2^79310897 is an apocalyptic number.

It is an amenable number.

79310897 is a deficient number, since it is larger than the sum of its proper divisors (29683).

79310897 is a wasteful number, since it uses less digits than its factorization.

79310897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29682.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 79310897 is about 8905.6665668551. Note that the first 3 decimals coincide. The cubic root of 79310897 is about 429.6461791062.

The spelling of 79310897 in words is "seventy-nine million, three hundred ten thousand, eight hundred ninety-seven".