389999996906657 has 2 divisors, whose sum is σ = 389999996906658. Its totient is φ = 389999996906656.

The previous prime is 389999996906647. The next prime is 389999996906713. The reversal of 389999996906657 is 756609699999983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205229233278976 + 184770763627681 = 14325824^2 + 13593041^2 .

It is a cyclic number.

It is not a de Polignac number, because 389999996906657 - 2⁴⁸ = 108525020196001 is a prime.

It is not a weakly prime, because it can be changed into another prime (389999996906627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194999998453328 + 194999998453329.

It is an arithmetic number, because the mean of its divisors is an integer number (194999998453329).

Almost surely, 2^{389999996906657} is an apocalyptic number.

It is an amenable number.

389999996906657 is a deficient number, since it is larger than the sum of its proper divisors (1).

389999996906657 is an equidigital number, since it uses as much as digits as its factorization.

389999996906657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 867821895360, while the sum is 104.

The spelling of 389999996906657 in words is "three hundred eighty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-six million, nine hundred six thousand, six hundred fifty-seven".