238839 has 4 divisors (see below), whose sum is σ = 318456. Its totient is φ = 159224.

The previous prime is 238837. The next prime is 238841. The reversal of 238839 is 938832.

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 (238837) and next prime (238841).

It is a cyclic number.

It is not a de Polignac number, because 238839 - 2¹ = 238837 is a prime.

It is a D-number.

238839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238837) 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, 39804 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (79614).

2²³⁸⁸³⁹ is an apocalyptic number.

238839 is a deficient number, since it is larger than the sum of its proper divisors (79617).

238839 is an equidigital number, since it uses as much as digits as its factorization.

238839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79616.

The product of its digits is 10368, while the sum is 33.

The square root of 238839 is about 488.7115713793. The cubic root of 238839 is about 62.0442798493.

The spelling of 238839 in words is "two hundred thirty-eight thousand, eight hundred thirty-nine".