389000 has 32 divisors (see below), whose sum is σ = 912600. Its totient is φ = 155200.

The previous prime is 388991. The next prime is 389003. The reversal of 389000 is 983.

It can be written as a sum of positive squares in 4 ways, for example, as 68644 + 320356 = 262^2 + 566^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (389003) by changing a digit.

389000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 806 + ... + 1194.

2³⁸⁹⁰⁰⁰ 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 389000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456300).

389000 is an abundant number, since it is smaller than the sum of its proper divisors (523600).

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

389000 is a wasteful number, since it uses less digits than its factorization.

389000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 389000 is about 623.6986451805. The cubic root of 389000 is about 72.9989366205.

Adding to 389000 its reverse (983), we get a palindrome (389983).

The spelling of 389000 in words is "three hundred eighty-nine thousand".