79228999 has 4 divisors (see below), whose sum is σ = 79249720. Its totient is φ = 79208280.

The previous prime is 79228987. The next prime is 79229047. The reversal of 79228999 is 99982297.

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 79228999 - 2⁵ = 79228967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79228969) by changing a digit.

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, 2772 + ... + 12889.

It is an arithmetic number, because the mean of its divisors is an integer number (19812430).

Almost surely, 2^79228999 is an apocalyptic number.

79228999 is a deficient number, since it is larger than the sum of its proper divisors (20721).

79228999 is a wasteful number, since it uses less digits than its factorization.

79228999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20720.

The product of its digits is 1469664, while the sum is 55.

The square root of 79228999 is about 8901.0672955551. The cubic root of 79228999 is about 429.4982411274.

It can be divided in two parts, 792 and 28999, that added together give a cube (29791 = 31³).

The spelling of 79228999 in words is "seventy-nine million, two hundred twenty-eight thousand, nine hundred ninety-nine".