79231899 has 4 divisors (see below), whose sum is σ = 105642536. Its totient is φ = 52821264.

The previous prime is 79231891. The next prime is 79231913. The reversal of 79231899 is 99813297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99813297 = 3 ⋅33271099.

It is not a de Polignac number, because 79231899 - 2³ = 79231891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79231891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13205314 + ... + 13205319.

It is an arithmetic number, because the mean of its divisors is an integer number (26410634).

Almost surely, 2^79231899 is an apocalyptic number.

79231899 is a deficient number, since it is larger than the sum of its proper divisors (26410637).

79231899 is a wasteful number, since it uses less digits than its factorization.

79231899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410636.

The product of its digits is 244944, while the sum is 48.

The square root of 79231899 is about 8901.2301958774. The cubic root of 79231899 is about 429.5034813371.

The spelling of 79231899 in words is "seventy-nine million, two hundred thirty-one thousand, eight hundred ninety-nine".