438815 has 16 divisors (see below), whose sum is σ = 583968. Its totient is φ = 314496.

The previous prime is 438793. The next prime is 438827. The reversal of 438815 is 518834.

It is not a de Polignac number, because 438815 - 2¹² = 434719 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 2717 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (36498).

2⁴³⁸⁸¹⁵ is an apocalyptic number.

438815 is a deficient number, since it is larger than the sum of its proper divisors (145153).

438815 is a wasteful number, since it uses less digits than its factorization.

438815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its digits is 3840, while the sum is 29.

The square root of 438815 is about 662.4311284956. The cubic root of 438815 is about 75.9907075435.

The spelling of 438815 in words is "four hundred thirty-eight thousand, eight hundred fifteen".