438805 has 16 divisors (see below), whose sum is σ = 576000. Its totient is φ = 319680.

The previous prime is 438793. The next prime is 438827. The reversal of 438805 is 508834.

It is not a de Polignac number, because 438805 - 2¹¹ = 436757 is a prime.

438805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871 + ... + 3019.

It is an arithmetic number, because the mean of its divisors is an integer number (36000).

2⁴³⁸⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

438805 is a deficient number, since it is larger than the sum of its proper divisors (137195).

438805 is a wasteful number, since it uses less digits than its factorization.

438805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 438805 is about 662.4235804982. The cubic root of 438805 is about 75.9901302973.

It can be divided in two parts, 4 and 38805, that added together give a square (38809 = 197²).

The spelling of 438805 in words is "four hundred thirty-eight thousand, eight hundred five".