323645939 has 2 divisors, whose sum is σ = 323645940. Its totient is φ = 323645938.

The previous prime is 323645909. The next prime is 323645941. The reversal of 323645939 is 939546323.

It is a strong prime.

It is an emirp because it is prime and its reverse (939546323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323645939 - 2²⁸ = 55210483 is a prime.

Together with 323645941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 323645939.

It is not a weakly prime, because it can be changed into another prime (323645909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161822969 + 161822970.

It is an arithmetic number, because the mean of its divisors is an integer number (161822970).

Almost surely, 2^323645939 is an apocalyptic number.

323645939 is a deficient number, since it is larger than the sum of its proper divisors (1).

323645939 is an equidigital number, since it uses as much as digits as its factorization.

323645939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 44.

The square root of 323645939 is about 17990.1622838706. The cubic root of 323645939 is about 686.5782699806.

The spelling of 323645939 in words is "three hundred twenty-three million, six hundred forty-five thousand, nine hundred thirty-nine".