79487815 has 16 divisors (see below), whose sum is σ = 104509440. Its totient is φ = 57557920.

The previous prime is 79487789. The next prime is 79487833. The reversal of 79487815 is 51878497.

It is not a de Polignac number, because 79487815 - 2⁵ = 79487783 is a prime.

It is a congruent number.

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, 10122 + ... + 16168.

It is an arithmetic number, because the mean of its divisors is an integer number (6531840).

Almost surely, 2^79487815 is an apocalyptic number.

79487815 is a deficient number, since it is larger than the sum of its proper divisors (25021625).

79487815 is a wasteful number, since it uses less digits than its factorization.

79487815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302.

The product of its digits is 564480, while the sum is 49.

The square root of 79487815 is about 8915.5939230093. The cubic root of 79487815 is about 429.9654109549.

The spelling of 79487815 in words is "seventy-nine million, four hundred eighty-seven thousand, eight hundred fifteen".