389526857 has 2 divisors, whose sum is σ = 389526858. Its totient is φ = 389526856.

The previous prime is 389526853. The next prime is 389526871. The reversal of 389526857 is 758625983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389509696 + 17161 = 19736^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 389526857 - 2² = 389526853 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 389526799 and 389526808.

It is not a weakly prime, because it can be changed into another prime (389526853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194763428 + 194763429.

It is an arithmetic number, because the mean of its divisors is an integer number (194763429).

Almost surely, 2^389526857 is an apocalyptic number.

It is an amenable number.

389526857 is a deficient number, since it is larger than the sum of its proper divisors (1).

389526857 is an equidigital number, since it uses as much as digits as its factorization.

389526857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 53.

The square root of 389526857 is about 19736.4347590947. The cubic root of 389526857 is about 730.3187805202.

The spelling of 389526857 in words is "three hundred eighty-nine million, five hundred twenty-six thousand, eight hundred fifty-seven".