320063399 has 4 divisors (see below), whose sum is σ = 320435136. Its totient is φ = 319691664.

The previous prime is 320063389. The next prime is 320063411. The reversal of 320063399 is 993360023.

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 320063399 - 2⁴ = 320063383 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 (320063309) 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, 184574 + ... + 186299.

It is an arithmetic number, because the mean of its divisors is an integer number (80108784).

Almost surely, 2^320063399 is an apocalyptic number.

320063399 is a deficient number, since it is larger than the sum of its proper divisors (371737).

320063399 is an equidigital number, since it uses as much as digits as its factorization.

320063399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371736.

The product of its (nonzero) digits is 26244, while the sum is 35.

The square root of 320063399 is about 17890.3157881576. The cubic root of 320063399 is about 684.0355468400.

The spelling of 320063399 in words is "three hundred twenty million, sixty-three thousand, three hundred ninety-nine".