438785 has 8 divisors (see below), whose sum is σ = 531456. Its totient is φ = 347760.

The previous prime is 438769. The next prime is 438793. The reversal of 438785 is 587834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 438785 - 2⁴ = 438769 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290 + ... + 980.

It is an arithmetic number, because the mean of its divisors is an integer number (66432).

2⁴³⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

438785 is a deficient number, since it is larger than the sum of its proper divisors (92671).

438785 is a wasteful number, since it uses less digits than its factorization.

438785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 26880, while the sum is 35.

The square root of 438785 is about 662.4084842452. The cubic root of 438785 is about 75.9889757786.

The spelling of 438785 in words is "four hundred thirty-eight thousand, seven hundred eighty-five".