79321115 has 4 divisors (see below), whose sum is σ = 95185344. Its totient is φ = 63456888.

The previous prime is 79321097. The next prime is 79321127. The reversal of 79321115 is 51112397.

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

It is a cyclic number.

It is not a de Polignac number, because 79321115 - 2¹⁸ = 79058971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7932107 + ... + 7932116.

It is an arithmetic number, because the mean of its divisors is an integer number (23796336).

Almost surely, 2^79321115 is an apocalyptic number.

79321115 is a deficient number, since it is larger than the sum of its proper divisors (15864229).

79321115 is a wasteful number, since it uses less digits than its factorization.

79321115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15864228.

The product of its digits is 1890, while the sum is 29.

The square root of 79321115 is about 8906.2402280648. The cubic root of 79321115 is about 429.6646294340.

The spelling of 79321115 in words is "seventy-nine million, three hundred twenty-one thousand, one hundred fifteen".