320983939 has 2 divisors, whose sum is σ = 320983940. Its totient is φ = 320983938.

The previous prime is 320983937. The next prime is 320983969. The reversal of 320983939 is 939389023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320983939 - 2¹ = 320983937 is a prime.

Together with 320983937, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320983937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160491969 + 160491970.

It is an arithmetic number, because the mean of its divisors is an integer number (160491970).

Almost surely, 2^320983939 is an apocalyptic number.

320983939 is a deficient number, since it is larger than the sum of its proper divisors (1).

320983939 is an equidigital number, since it uses as much as digits as its factorization.

320983939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 320983939 is about 17916.0246427605. The cubic root of 320983939 is about 684.6907080435.

The spelling of 320983939 in words is "three hundred twenty million, nine hundred eighty-three thousand, nine hundred thirty-nine".