307939 has 2 divisors, whose sum is σ = 307940. Its totient is φ = 307938.

The previous prime is 307919. The next prime is 307969. The reversal of 307939 is 939703.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307939 is a prime.

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 307939.

It is not a weakly prime, because it can be changed into another prime (307919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153969 + 153970.

It is an arithmetic number, because the mean of its divisors is an integer number (153970).

2³⁰⁷⁹³⁹ is an apocalyptic number.

307939 is a deficient number, since it is larger than the sum of its proper divisors (1).

307939 is an equidigital number, since it uses as much as digits as its factorization.

307939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 307939 is about 554.9225171139. The cubic root of 307939 is about 67.5286755163.

The spelling of 307939 in words is "three hundred seven thousand, nine hundred thirty-nine".