320005879 has 4 divisors (see below), whose sum is σ = 321028576. Its totient is φ = 318983184.

The previous prime is 320005867. The next prime is 320005913. The reversal of 320005879 is 978500023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978500023 = 29243 ⋅33461.

It is a cyclic number.

It is not a de Polignac number, because 320005879 - 2²⁷ = 185788151 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 (320005849) 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, 510879 + ... + 511504.

It is an arithmetic number, because the mean of its divisors is an integer number (80257144).

Almost surely, 2^320005879 is an apocalyptic number.

320005879 is a deficient number, since it is larger than the sum of its proper divisors (1022697).

320005879 is a wasteful number, since it uses less digits than its factorization.

320005879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022696.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 320005879 is about 17888.7081422891. The cubic root of 320005879 is about 683.9945673736.

The spelling of 320005879 in words is "three hundred twenty million, five thousand, eight hundred seventy-nine".