389671 has 4 divisors (see below), whose sum is σ = 410200. Its totient is φ = 369144.

The previous prime is 389663. The next prime is 389687. The reversal of 389671 is 176983.

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

It is a cyclic number.

It is not a de Polignac number, because 389671 - 2³ = 389663 is a prime.

It is a Duffinian number.

389671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389621) 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, 10236 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (102550).

2³⁸⁹⁶⁷¹ is an apocalyptic number.

389671 is a deficient number, since it is larger than the sum of its proper divisors (20529).

389671 is a wasteful number, since it uses less digits than its factorization.

389671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20528.

The product of its digits is 9072, while the sum is 34.

The square root of 389671 is about 624.2363334507. The cubic root of 389671 is about 73.0408853349.

The spelling of 389671 in words is "three hundred eighty-nine thousand, six hundred seventy-one".