320604939 has 16 divisors (see below), whose sum is σ = 478164000. Its totient is φ = 212299488.

The previous prime is 320604937. The next prime is 320604941. The reversal of 320604939 is 939406023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320604937) and next prime (320604941).

It is not a de Polignac number, because 320604939 - 2¹ = 320604937 is a prime.

It is a super-2 number, since 2×320604939² = 205575053822387442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320604937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35824 + ... + 43869.

It is an arithmetic number, because the mean of its divisors is an integer number (29885250).

Almost surely, 2^320604939 is an apocalyptic number.

320604939 is a deficient number, since it is larger than the sum of its proper divisors (157559061).

320604939 is a wasteful number, since it uses less digits than its factorization.

320604939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79851 (or 79845 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 320604939 is about 17905.4443954904. Note that the first 3 decimals coincide. The cubic root of 320604939 is about 684.4211203297.

The spelling of 320604939 in words is "three hundred twenty million, six hundred four thousand, nine hundred thirty-nine".