389209 has 4 divisors (see below), whose sum is σ = 402660. Its totient is φ = 375760.

The previous prime is 389189. The next prime is 389219. The reversal of 389209 is 902983.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299209 + 90000 = 547^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 389209 - 2⁹ = 388697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389219) 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, 6682 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (100665).

2³⁸⁹²⁰⁹ is an apocalyptic number.

It is an amenable number.

389209 is a deficient number, since it is larger than the sum of its proper divisors (13451).

389209 is a wasteful number, since it uses less digits than its factorization.

389209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13450.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 389209 is about 623.8661715464. The cubic root of 389209 is about 73.0120077827.

The spelling of 389209 in words is "three hundred eighty-nine thousand, two hundred nine".