389127886989 has 8 divisors (see below), whose sum is σ = 518843376480. Its totient is φ = 259415494416.

The previous prime is 389127886967. The next prime is 389127886999. The reversal of 389127886989 is 989688721983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389127886989 - 2³³ = 380537952397 is a prime.

It is a super-2 number, since 2×389127886989² (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 (389127886999) 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 7 ways as a sum of consecutive naturals, for example, 463194 + ... + 996395.

It is an arithmetic number, because the mean of its divisors is an integer number (64855422060).

Almost surely, 2^389127886989 is an apocalyptic number.

It is an amenable number.

389127886989 is a deficient number, since it is larger than the sum of its proper divisors (129715489491).

389127886989 is a wasteful number, since it uses less digits than its factorization.

389127886989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548459.

The product of its digits is 752467968, while the sum is 78.

The spelling of 389127886989 in words is "three hundred eighty-nine billion, one hundred twenty-seven million, eight hundred eighty-six thousand, nine hundred eighty-nine".