79315147 has 4 divisors (see below), whose sum is σ = 79790256. Its totient is φ = 78840040.

The previous prime is 79315133. The next prime is 79315151. The reversal of 79315147 is 74151397.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79315147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79315127) 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, 237304 + ... + 237637.

It is an arithmetic number, because the mean of its divisors is an integer number (19947564).

Almost surely, 2^79315147 is an apocalyptic number.

79315147 is a deficient number, since it is larger than the sum of its proper divisors (475109).

79315147 is a wasteful number, since it uses less digits than its factorization.

79315147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475108.

The product of its digits is 26460, while the sum is 37.

The square root of 79315147 is about 8905.9051757808. The cubic root of 79315147 is about 429.6538533927.

The spelling of 79315147 in words is "seventy-nine million, three hundred fifteen thousand, one hundred forty-seven".