79923251 has 4 divisors (see below), whose sum is σ = 79973712. Its totient is φ = 79872792.

The previous prime is 79923241. The next prime is 79923271. The reversal of 79923251 is 15232997.

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 79923251 - 2⁶ = 79923187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79923241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22775 + ... + 26048.

It is an arithmetic number, because the mean of its divisors is an integer number (19993428).

Almost surely, 2^79923251 is an apocalyptic number.

79923251 is a deficient number, since it is larger than the sum of its proper divisors (50461).

79923251 is a wasteful number, since it uses less digits than its factorization.

79923251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50460.

The product of its digits is 34020, while the sum is 38.

The square root of 79923251 is about 8939.9804809630. The cubic root of 79923251 is about 430.7491016619.

The spelling of 79923251 in words is "seventy-nine million, nine hundred twenty-three thousand, two hundred fifty-one".