79649515 has 16 divisors (see below), whose sum is σ = 107866080. Its totient is φ = 55928320.

The previous prime is 79649477. The next prime is 79649543. The reversal of 79649515 is 51594697.

It is not a de Polignac number, because 79649515 - 2¹⁹ = 79125227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23374 + ... + 26563.

It is an arithmetic number, because the mean of its divisors is an integer number (6741630).

Almost surely, 2^79649515 is an apocalyptic number.

79649515 is a deficient number, since it is larger than the sum of its proper divisors (28216565).

79649515 is a wasteful number, since it uses less digits than its factorization.

79649515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49982.

The product of its digits is 340200, while the sum is 46.

The square root of 79649515 is about 8924.6576965170. The cubic root of 79649515 is about 430.2567693037.

The spelling of 79649515 in words is "seventy-nine million, six hundred forty-nine thousand, five hundred fifteen".