79091715 has 8 divisors (see below), whose sum is σ = 126546768. Its totient is φ = 42182240.

The previous prime is 79091713. The next prime is 79091717. The reversal of 79091715 is 51719097.

It is an interprime number because it is at equal distance from previous prime (79091713) and next prime (79091717).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79091715 - 2¹ = 79091713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79091711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2636376 + ... + 2636405.

It is an arithmetic number, because the mean of its divisors is an integer number (15818346).

Almost surely, 2^79091715 is an apocalyptic number.

79091715 is a deficient number, since it is larger than the sum of its proper divisors (47455053).

79091715 is a wasteful number, since it uses less digits than its factorization.

79091715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272789.

The product of its (nonzero) digits is 19845, while the sum is 39.

The square root of 79091715 is about 8893.3522925835. The cubic root of 79091715 is about 429.2500267688.

The spelling of 79091715 in words is "seventy-nine million, ninety-one thousand, seven hundred fifteen".