389432 has 8 divisors (see below), whose sum is σ = 730200. Its totient is φ = 194712.

The previous prime is 389401. The next prime is 389437. The reversal of 389432 is 234983.

389432 is nontrivially palindromic in base 3.

389432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

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 = 389395 and 389404.

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 as a sum of consecutive naturals, namely, 24332 + ... + 24347.

It is an arithmetic number, because the mean of its divisors is an integer number (91275).

2³⁸⁹⁴³² is an apocalyptic number.

It is an amenable number.

389432 is a deficient number, since it is larger than the sum of its proper divisors (340768).

389432 is a wasteful number, since it uses less digits than its factorization.

389432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48685 (or 48681 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 389432 is about 624.0448701816. The cubic root of 389432 is about 73.0259493660.

Subtracting from 389432 its sum of digits (29), we obtain a triangular number (389403 = T₈₈₂).

Subtracting from 389432 its reverse (234983), we obtain a square (154449 = 393²).

The spelling of 389432 in words is "three hundred eighty-nine thousand, four hundred thirty-two".