389835438769 has 24 divisors (see below), whose sum is σ = 473270489280. Its totient is φ = 319568112864.

The previous prime is 389835438767. The next prime is 389835438779. The reversal of 389835438769 is 967834538983.

It is not a de Polignac number, because 389835438769 - 2¹ = 389835438767 is a prime.

It is a super-2 number, since 2×389835438769² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389835438767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8681427 + ... + 8726215.

It is an arithmetic number, because the mean of its divisors is an integer number (19719603720).

Almost surely, 2^389835438769 is an apocalyptic number.

It is an amenable number.

389835438769 is a deficient number, since it is larger than the sum of its proper divisors (83435050511).

389835438769 is a wasteful number, since it uses less digits than its factorization.

389835438769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52549 (or 52542 counting only the distinct ones).

The product of its digits is 940584960, while the sum is 73.

The spelling of 389835438769 in words is "three hundred eighty-nine billion, eight hundred thirty-five million, four hundred thirty-eight thousand, seven hundred sixty-nine".