838239 has 4 divisors (see below), whose sum is σ = 1117656. Its totient is φ = 558824.

The previous prime is 838207. The next prime is 838247. The reversal of 838239 is 932838.

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 838239 - 2⁵ = 838207 is a prime.

It is a super-2 number, since 2×838239² = 1405289242242, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838249) 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, 139704 + ... + 139709.

It is an arithmetic number, because the mean of its divisors is an integer number (279414).

2⁸³⁸²³⁹ is an apocalyptic number.

838239 is a deficient number, since it is larger than the sum of its proper divisors (279417).

838239 is a wasteful number, since it uses less digits than its factorization.

838239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279416.

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

The square root of 838239 is about 915.5539306890. The cubic root of 838239 is about 94.2878980866.

The spelling of 838239 in words is "eight hundred thirty-eight thousand, two hundred thirty-nine".