320009479 has 4 divisors (see below), whose sum is σ = 338833584. Its totient is φ = 301185376.

The previous prime is 320009453. The next prime is 320009491. The reversal of 320009479 is 974900023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974900023 = 1373 ⋅710051.

It is a cyclic number.

It is not a de Polignac number, because 320009479 - 2⁵ = 320009447 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 (320009429) 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, 9412027 + ... + 9412060.

It is an arithmetic number, because the mean of its divisors is an integer number (84708396).

Almost surely, 2^320009479 is an apocalyptic number.

320009479 is a deficient number, since it is larger than the sum of its proper divisors (18824105).

320009479 is a wasteful number, since it uses less digits than its factorization.

320009479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18824104.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 320009479 is about 17888.8087641408. The cubic root of 320009479 is about 683.9971322965.

The spelling of 320009479 in words is "three hundred twenty million, nine thousand, four hundred seventy-nine".