389389 has 16 divisors (see below), whose sum is σ = 524160. Its totient is φ = 279360.

The previous prime is 389381. The next prime is 389399. The reversal of 389389 is 983983.

It is a cyclic number.

It is not a de Polignac number, because 389389 - 2³ = 389381 is a prime.

389389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389381) 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, 807 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2³⁸⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

389389 is a deficient number, since it is larger than the sum of its proper divisors (134771).

389389 is a wasteful number, since it uses less digits than its factorization.

389389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 46656, while the sum is 40.

The square root of 389389 is about 624.0104165797. The cubic root of 389389 is about 73.0232614929.

The spelling of 389389 in words is "three hundred eighty-nine thousand, three hundred eighty-nine".