389609 has 4 divisors (see below), whose sum is σ = 425040. Its totient is φ = 354180.

The previous prime is 389591. The next prime is 389621. The reversal of 389609 is 906983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 389609 - 2¹⁶ = 324073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389629) 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, 17699 + ... + 17720.

It is an arithmetic number, because the mean of its divisors is an integer number (106260).

2³⁸⁹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

389609 is a deficient number, since it is larger than the sum of its proper divisors (35431).

389609 is a wasteful number, since it uses less digits than its factorization.

389609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35430.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 389609 is about 624.1866707965. The cubic root of 389609 is about 73.0370113189.

The spelling of 389609 in words is "three hundred eighty-nine thousand, six hundred nine".