389172 has 48 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 107520.

The previous prime is 389171. The next prime is 389173. The reversal of 389172 is 271983.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (389171) and next prime (389173).

Its product of digits (3024) is a multiple of the sum of its prime factors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388 + ... + 3500.

It is an arithmetic number, because the mean of its divisors is an integer number (22344).

2³⁸⁹¹⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536256).

389172 is an abundant number, since it is smaller than the sum of its proper divisors (683340).

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

389172 is a wasteful number, since it uses less digits than its factorization.

389172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 166 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 389172 is about 623.8365170459. The cubic root of 389172 is about 73.0096940901.

It can be divided in two parts, 389 and 172, that added together give a triangular number (561 = T₃₃).

The spelling of 389172 in words is "three hundred eighty-nine thousand, one hundred seventy-two".