389952457 has 2 divisors, whose sum is σ = 389952458. Its totient is φ = 389952456.

The previous prime is 389952449. The next prime is 389952527. The reversal of 389952457 is 754259983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336208896 + 53743561 = 18336^2 + 7331^2 .

It is a cyclic number.

It is not a de Polignac number, because 389952457 - 2³ = 389952449 is a prime.

It is not a weakly prime, because it can be changed into another prime (389952427) 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, 194976228 + 194976229.

It is an arithmetic number, because the mean of its divisors is an integer number (194976229).

Almost surely, 2^389952457 is an apocalyptic number.

It is an amenable number.

389952457 is a deficient number, since it is larger than the sum of its proper divisors (1).

389952457 is an equidigital number, since it uses as much as digits as its factorization.

389952457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 52.

The square root of 389952457 is about 19747.2139047512. The cubic root of 389952457 is about 730.5846676542.

The spelling of 389952457 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, four hundred fifty-seven".