389999996926693 has 2 divisors, whose sum is σ = 389999996926694. Its totient is φ = 389999996926692.

The previous prime is 389999996926637. The next prime is 389999996926769. The reversal of 389999996926693 is 396629699999983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335502854327169 + 54497142599524 = 18316737^2 + 7382218^2 .

It is a cyclic number.

It is not a de Polignac number, because 389999996926693 - 2⁹ = 389999996926181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389999996926093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194999998463346 + 194999998463347.

It is an arithmetic number, because the mean of its divisors is an integer number (194999998463347).

Almost surely, 2^{389999996926693} is an apocalyptic number.

It is an amenable number.

389999996926693 is a deficient number, since it is larger than the sum of its proper divisors (1).

389999996926693 is an equidigital number, since it uses as much as digits as its factorization.

389999996926693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1338925209984, while the sum is 106.

The spelling of 389999996926693 in words is "three hundred eighty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-six million, nine hundred twenty-six thousand, six hundred ninety-three".