389387 has 4 divisors (see below), whose sum is σ = 390816. Its totient is φ = 387960.

The previous prime is 389381. The next prime is 389399. The reversal of 389387 is 783983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783983 = 571 ⋅1373.

It is a cyclic number.

It is not a de Polignac number, because 389387 - 2¹⁰ = 388363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389387.

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 3 ways as a sum of consecutive naturals, for example, 164 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (97704).

2³⁸⁹³⁸⁷ is an apocalyptic number.

389387 is a deficient number, since it is larger than the sum of its proper divisors (1429).

389387 is a wasteful number, since it uses less digits than its factorization.

389387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428.

The product of its digits is 36288, while the sum is 38.

The square root of 389387 is about 624.0088140403. The cubic root of 389387 is about 73.0231364707.

The spelling of 389387 in words is "three hundred eighty-nine thousand, three hundred eighty-seven".