438239 has 4 divisors (see below), whose sum is σ = 442680. Its totient is φ = 433800.

The previous prime is 438233. The next prime is 438241. The reversal of 438239 is 932834.

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 438239 - 2⁴ = 438223 is a prime.

It is a super-2 number, since 2×438239² = 384106842242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438233) 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, 2069 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (110670).

2⁴³⁸²³⁹ is an apocalyptic number.

438239 is a deficient number, since it is larger than the sum of its proper divisors (4441).

438239 is a wasteful number, since it uses less digits than its factorization.

438239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440.

The product of its digits is 5184, while the sum is 29.

The square root of 438239 is about 661.9962235542. The cubic root of 438239 is about 75.9574438575.

The spelling of 438239 in words is "four hundred thirty-eight thousand, two hundred thirty-nine".