320087479 has 4 divisors (see below), whose sum is σ = 321497784. Its totient is φ = 318677176.

The previous prime is 320087447. The next prime is 320087497. The reversal of 320087479 is 974780023.

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 320087479 - 2⁵ = 320087447 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 (320087429) 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, 704812 + ... + 705265.

It is an arithmetic number, because the mean of its divisors is an integer number (80374446).

Almost surely, 2^320087479 is an apocalyptic number.

320087479 is a deficient number, since it is larger than the sum of its proper divisors (1410305).

320087479 is a wasteful number, since it uses less digits than its factorization.

320087479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410304.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 320087479 is about 17890.9887652975. The cubic root of 320087479 is about 684.0527009027.

The spelling of 320087479 in words is "three hundred twenty million, eighty-seven thousand, four hundred seventy-nine".