389987559122 has 54 divisors (see below), whose sum is σ = 686089518597. Its totient is φ = 165773040048.

The previous prime is 389987559109. The next prime is 389987559139. The reversal of 389987559122 is 221955789983.

It can be written as a sum of positive squares in 2 ways, for example, as 284642523361 + 105345035761 = 533519^2 + 324569^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=441581.

Its product of digits (97977600) is a multiple of the sum of its prime divisors (525).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1230244508 + ... + 1230244824.

Almost surely, 2^389987559122 is an apocalyptic number.

389987559122 is a deficient number, since it is larger than the sum of its proper divisors (296101959475).

389987559122 is an frugal number, since it uses more digits than its factorization.

389987559122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 525 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 68.

The spelling of 389987559122 in words is "three hundred eighty-nine billion, nine hundred eighty-seven million, five hundred fifty-nine thousand, one hundred twenty-two".