79199231 has 4 divisors (see below), whose sum is σ = 80089200. Its totient is φ = 78309264.

The previous prime is 79199221. The next prime is 79199269. The reversal of 79199231 is 13299197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13299197 = 29 ⋅458593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79199231 is a prime.

It is a super-2 number, since 2×79199231² = 12545036381982722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79199221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444851 + ... + 445028.

It is an arithmetic number, because the mean of its divisors is an integer number (20022300).

Almost surely, 2^79199231 is an apocalyptic number.

79199231 is a deficient number, since it is larger than the sum of its proper divisors (889969).

79199231 is an equidigital number, since it uses as much as digits as its factorization.

79199231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889968.

The product of its digits is 30618, while the sum is 41.

The square root of 79199231 is about 8899.3949794354. The cubic root of 79199231 is about 429.4444438841. Note that the first 5 decimals are identical.

The spelling of 79199231 in words is "seventy-nine million, one hundred ninety-nine thousand, two hundred thirty-one".