389086189 has 2 divisors, whose sum is σ = 389086190. Its totient is φ = 389086188.

The previous prime is 389086153. The next prime is 389086211. The reversal of 389086189 is 981680983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362902500 + 26183689 = 19050^2 + 5117^2 .

It is an emirp because it is prime and its reverse (981680983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389086189 - 2¹⁵ = 389053421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389086129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194543094 + 194543095.

It is an arithmetic number, because the mean of its divisors is an integer number (194543095).

Almost surely, 2^389086189 is an apocalyptic number.

It is an amenable number.

389086189 is a deficient number, since it is larger than the sum of its proper divisors (1).

389086189 is an equidigital number, since it uses as much as digits as its factorization.

389086189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 389086189 is about 19725.2677801849. The cubic root of 389086189 is about 730.0432757231.

The spelling of 389086189 in words is "three hundred eighty-nine million, eighty-six thousand, one hundred eighty-nine".