389957357 has 2 divisors, whose sum is σ = 389957358. Its totient is φ = 389957356.

The previous prime is 389957299. The next prime is 389957377. The reversal of 389957357 is 753759983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206381956 + 183575401 = 14366^2 + 13549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389957357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389957377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194978678 + 194978679.

It is an arithmetic number, because the mean of its divisors is an integer number (194978679).

Almost surely, 2^389957357 is an apocalyptic number.

It is an amenable number.

389957357 is a deficient number, since it is larger than the sum of its proper divisors (1).

389957357 is an equidigital number, since it uses as much as digits as its factorization.

389957357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 56.

The square root of 389957357 is about 19747.3379724964. The cubic root of 389957357 is about 730.5877277280.

The spelling of 389957357 in words is "three hundred eighty-nine million, nine hundred fifty-seven thousand, three hundred fifty-seven".