389430 has 24 divisors (see below), whose sum is σ = 1012752. Its totient is φ = 103824.

The previous prime is 389401. The next prime is 389437. The reversal of 389430 is 34983.

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 = 389394 and 389403.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389430.

It is not an unprimeable number, because it can be changed into a prime (389437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2074 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (42198).

2³⁸⁹⁴³⁰ is an apocalyptic number.

389430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389430 is an abundant number, since it is smaller than the sum of its proper divisors (623322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389430 is a wasteful number, since it uses less digits than its factorization.

389430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340 (or 4337 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 389430 is about 624.0432677307. The cubic root of 389430 is about 73.0258243531.

Subtracting from 389430 its sum of digits (27), we obtain a triangular number (389403 = T₈₈₂).

The spelling of 389430 in words is "three hundred eighty-nine thousand, four hundred thirty".