79931459 has 4 divisors (see below), whose sum is σ = 79964304. Its totient is φ = 79898616.

The previous prime is 79931437. The next prime is 79931491. The reversal of 79931459 is 95413997.

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 79931459 - 2¹⁶ = 79865923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79931419) 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, 12452 + ... + 17745.

It is an arithmetic number, because the mean of its divisors is an integer number (19991076).

Almost surely, 2^79931459 is an apocalyptic number.

79931459 is a deficient number, since it is larger than the sum of its proper divisors (32845).

79931459 is a wasteful number, since it uses less digits than its factorization.

79931459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32844.

The product of its digits is 306180, while the sum is 47.

The square root of 79931459 is about 8940.4395305824. The cubic root of 79931459 is about 430.7638469230.

The spelling of 79931459 in words is "seventy-nine million, nine hundred thirty-one thousand, four hundred fifty-nine".