320408579 has 4 divisors (see below), whose sum is σ = 320617776. Its totient is φ = 320199384.

The previous prime is 320408573. The next prime is 320408581. The reversal of 320408579 is 975804023.

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 320408579 - 2²⁰ = 319360003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320408573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102284 + ... + 105369.

It is an arithmetic number, because the mean of its divisors is an integer number (80154444).

Almost surely, 2^320408579 is an apocalyptic number.

320408579 is a deficient number, since it is larger than the sum of its proper divisors (209197).

320408579 is a wasteful number, since it uses less digits than its factorization.

320408579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209196.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 320408579 is about 17899.9603072186. The cubic root of 320408579 is about 684.2813633045.

The spelling of 320408579 in words is "three hundred twenty million, four hundred eight thousand, five hundred seventy-nine".