389843 has 4 divisors (see below), whose sum is σ = 393960. Its totient is φ = 385728.

The previous prime is 389839. The next prime is 389849. The reversal of 389843 is 348983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348983 = 163 ⋅2141.

It is a cyclic number.

It is not a de Polignac number, because 389843 - 2² = 389839 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (389849) 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, 1913 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (98490).

2³⁸⁹⁸⁴³ is an apocalyptic number.

389843 is a deficient number, since it is larger than the sum of its proper divisors (4117).

389843 is an equidigital number, since it uses as much as digits as its factorization.

389843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116.

The product of its digits is 20736, while the sum is 35.

The square root of 389843 is about 624.3740865859. The cubic root of 389843 is about 73.0516304543.

The spelling of 389843 in words is "three hundred eighty-nine thousand, eight hundred forty-three".