389271 has 4 divisors (see below), whose sum is σ = 519032. Its totient is φ = 259512.

The previous prime is 389269. The next prime is 389273. The reversal of 389271 is 172983.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (389269) and next prime (389273).

It is not a de Polignac number, because 389271 - 2¹ = 389269 is a prime.

It is a super-2 number, since 2×389271² = 303063822882, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389271.

It is not an unprimeable number, because it can be changed into a prime (389273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64876 + ... + 64881.

It is an arithmetic number, because the mean of its divisors is an integer number (129758).

2³⁸⁹²⁷¹ is an apocalyptic number.

389271 is a deficient number, since it is larger than the sum of its proper divisors (129761).

389271 is a wasteful number, since it uses less digits than its factorization.

389271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129760.

The product of its digits is 3024, while the sum is 30.

The square root of 389271 is about 623.9158597119. The cubic root of 389271 is about 73.0158844523.

The spelling of 389271 in words is "three hundred eighty-nine thousand, two hundred seventy-one".