389868396556 has 12 divisors (see below), whose sum is σ = 682281174960. Its totient is φ = 194930918000.

The previous prime is 389868396539. The next prime is 389868396557. The reversal of 389868396556 is 655693868983.

It is a super-2 number, since 2×389868396556² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389868396557) 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 in 3 ways as a sum of consecutive naturals, for example, 542191 + ... + 1036198.

It is an arithmetic number, because the mean of its divisors is an integer number (56856764580).

Almost surely, 2^389868396556 is an apocalyptic number.

It is an amenable number.

389868396556 is a deficient number, since it is larger than the sum of its proper divisors (292412778404).

389868396556 is a wasteful number, since it uses less digits than its factorization.

389868396556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640144 (or 1640142 counting only the distinct ones).

The product of its digits is 2015539200, while the sum is 76.

The spelling of 389868396556 in words is "three hundred eighty-nine billion, eight hundred sixty-eight million, three hundred ninety-six thousand, five hundred fifty-six".