389789755923 has 4 divisors (see below), whose sum is σ = 519719674568. Its totient is φ = 259859837280.

The previous prime is 389789755921. The next prime is 389789755933. The reversal of 389789755923 is 329557987983.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 389789755923 - 2¹ = 389789755921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389789755921) 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, 64964959318 + ... + 64964959323.

It is an arithmetic number, because the mean of its divisors is an integer number (129929918642).

Almost surely, 2^389789755923 is an apocalyptic number.

389789755923 is a deficient number, since it is larger than the sum of its proper divisors (129929918645).

389789755923 is a wasteful number, since it uses less digits than its factorization.

389789755923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129929918644.

The product of its digits is 1028764800, while the sum is 75.

The spelling of 389789755923 in words is "three hundred eighty-nine billion, seven hundred eighty-nine million, seven hundred fifty-five thousand, nine hundred twenty-three".