438755 has 4 divisors (see below), whose sum is σ = 526512. Its totient is φ = 351000.

The previous prime is 438733. The next prime is 438761. The reversal of 438755 is 557834.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557834 = 2 ⋅278917.

It is not a de Polignac number, because 438755 - 2⁸ = 438499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43871 + ... + 43880.

It is an arithmetic number, because the mean of its divisors is an integer number (131628).

2⁴³⁸⁷⁵⁵ is an apocalyptic number.

438755 is a deficient number, since it is larger than the sum of its proper divisors (87757).

438755 is an equidigital number, since it uses as much as digits as its factorization.

438755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87756.

The product of its digits is 16800, while the sum is 32.

The square root of 438755 is about 662.3858392206. The cubic root of 438755 is about 75.9872439348.

The spelling of 438755 in words is "four hundred thirty-eight thousand, seven hundred fifty-five".