389678876984 has 16 divisors (see below), whose sum is σ = 740656770720. Its totient is φ = 192170404800.

The previous prime is 389678876957. The next prime is 389678876989. The reversal of 389678876984 is 489678876983.

It is a super-2 number, since 2×389678876984² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389678876989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333628592 + ... + 333629759.

It is an arithmetic number, because the mean of its divisors is an integer number (46291048170).

Almost surely, 2^389678876984 is an apocalyptic number.

It is an amenable number.

389678876984 is a deficient number, since it is larger than the sum of its proper divisors (350977893736).

389678876984 is a wasteful number, since it uses less digits than its factorization.

389678876984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667258430 (or 667258426 counting only the distinct ones).

The product of its digits is 7023034368, while the sum is 83.

Subtracting 389678876984 from its reverse (489678876983), we obtain a palindrome (99999999999).

The spelling of 389678876984 in words is "three hundred eighty-nine billion, six hundred seventy-eight million, eight hundred seventy-six thousand, nine hundred eighty-four".