389375057 has 2 divisors, whose sum is σ = 389375058. Its totient is φ = 389375056.

The previous prime is 389375053. The next prime is 389375059. The reversal of 389375057 is 750573983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213043216 + 176331841 = 14596^2 + 13279^2 .

It is an emirp because it is prime and its reverse (750573983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389375057 - 2² = 389375053 is a prime.

It is a super-2 number, since 2×389375057² = 303225870027506498, which contains 22 as substring.

Together with 389375059, 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 (389375053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194687528 + 194687529.

It is an arithmetic number, because the mean of its divisors is an integer number (194687529).

Almost surely, 2^389375057 is an apocalyptic number.

It is an amenable number.

389375057 is a deficient number, since it is larger than the sum of its proper divisors (1).

389375057 is an equidigital number, since it uses as much as digits as its factorization.

389375057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 389375057 is about 19732.5887049824. The cubic root of 389375057 is about 730.2238989194.

The spelling of 389375057 in words is "three hundred eighty-nine million, three hundred seventy-five thousand, fifty-seven".