438859 has 4 divisors (see below), whose sum is σ = 443880. Its totient is φ = 433840.

The previous prime is 438853. The next prime is 438869. The reversal of 438859 is 958834.

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 438859 - 2⁵ = 438827 is a prime.

It is a Duffinian number.

438859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (438853) 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, 2377 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (110970).

2⁴³⁸⁸⁵⁹ is an apocalyptic number.

438859 is a deficient number, since it is larger than the sum of its proper divisors (5021).

438859 is an equidigital number, since it uses as much as digits as its factorization.

438859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020.

The product of its digits is 34560, while the sum is 37.

The square root of 438859 is about 662.4643386628. The cubic root of 438859 is about 75.9932473225.

The spelling of 438859 in words is "four hundred thirty-eight thousand, eight hundred fifty-nine".