389438 has 8 divisors (see below), whose sum is σ = 667632. Its totient is φ = 166896.

The previous prime is 389437. The next prime is 389447. The reversal of 389438 is 834983.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 389398 and 389407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389437) 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, 13895 + ... + 13922.

It is an arithmetic number, because the mean of its divisors is an integer number (83454).

2³⁸⁹⁴³⁸ is an apocalyptic number.

389438 is a deficient number, since it is larger than the sum of its proper divisors (278194).

389438 is a wasteful number, since it uses less digits than its factorization.

389438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27826.

The product of its digits is 20736, while the sum is 35.

The square root of 389438 is about 624.0496775097. The cubic root of 389438 is about 73.0263244024.

Subtracting from 389438 its sum of digits (35), we obtain a triangular number (389403 = T₈₈₂).

The spelling of 389438 in words is "three hundred eighty-nine thousand, four hundred thirty-eight".