389140623 has 24 divisors (see below), whose sum is σ = 576449328. Its totient is φ = 252882432.

The previous prime is 389140567. The next prime is 389140627. The reversal of 389140623 is 326041983.

It is a de Polignac number, because none of the positive numbers 2^k-389140623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389140627) 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, 55165 + ... + 61817.

It is an arithmetic number, because the mean of its divisors is an integer number (24018722).

Almost surely, 2^389140623 is an apocalyptic number.

389140623 is a deficient number, since it is larger than the sum of its proper divisors (187308705).

389140623 is a wasteful number, since it uses less digits than its factorization.

389140623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823 (or 6820 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 389140623 is about 19726.6475357573. The cubic root of 389140623 is about 730.0773190137.

The spelling of 389140623 in words is "three hundred eighty-nine million, one hundred forty thousand, six hundred twenty-three".