389643 has 8 divisors (see below), whose sum is σ = 542208. Its totient is φ = 248424.

The previous prime is 389629. The next prime is 389651. The reversal of 389643 is 346983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389643 - 2⁶ = 389579 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389643.

It is not an unprimeable number, because it can be changed into a prime (389663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755 + ... + 2892.

It is an arithmetic number, because the mean of its divisors is an integer number (67776).

2³⁸⁹⁶⁴³ is an apocalyptic number.

389643 is a deficient number, since it is larger than the sum of its proper divisors (152565).

389643 is a wasteful number, since it uses less digits than its factorization.

389643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673.

The product of its digits is 15552, while the sum is 33.

The square root of 389643 is about 624.2139056445. The cubic root of 389643 is about 73.0391358302.

The spelling of 389643 in words is "three hundred eighty-nine thousand, six hundred forty-three".