389693439 has 24 divisors (see below), whose sum is σ = 618284160. Its totient is φ = 235418832.

The previous prime is 389693419. The next prime is 389693449. The reversal of 389693439 is 934396983.

It is a happy number.

389693439 is a `hidden beast` number, since 38 + 96 + 93 + 439 = 666.

It is not a de Polignac number, because 389693439 - 2¹² = 389689343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389693419) 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, 45609 + ... + 53474.

It is an arithmetic number, because the mean of its divisors is an integer number (25761840).

Almost surely, 2^389693439 is an apocalyptic number.

389693439 is a deficient number, since it is larger than the sum of its proper divisors (228590721).

389693439 is a wasteful number, since it uses less digits than its factorization.

389693439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99131 (or 99128 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 389693439 is about 19740.6544724333. The cubic root of 389693439 is about 730.4228731500.

The spelling of 389693439 in words is "three hundred eighty-nine million, six hundred ninety-three thousand, four hundred thirty-nine".