390235057 has 2 divisors, whose sum is σ = 390235058. Its totient is φ = 390235056.

The previous prime is 390235039. The next prime is 390235063. The reversal of 390235057 is 750532093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354342976 + 35892081 = 18824^2 + 5991^2 .

It is a cyclic number.

It is not a de Polignac number, because 390235057 - 2¹¹ = 390233009 is a prime.

It is not a weakly prime, because it can be changed into another prime (390235757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195117528 + 195117529.

It is an arithmetic number, because the mean of its divisors is an integer number (195117529).

Almost surely, 2^390235057 is an apocalyptic number.

It is an amenable number.

390235057 is a deficient number, since it is larger than the sum of its proper divisors (1).

390235057 is an equidigital number, since it uses as much as digits as its factorization.

390235057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 390235057 is about 19754.3680486114. The cubic root of 390235057 is about 730.7611108492.

The spelling of 390235057 in words is "three hundred ninety million, two hundred thirty-five thousand, fifty-seven".