438885 has 16 divisors (see below), whose sum is σ = 780480. Its totient is φ = 234000.

The previous prime is 438877. The next prime is 438887. The reversal of 438885 is 588834.

It is not a de Polignac number, because 438885 - 2³ = 438877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491 + ... + 1760.

It is an arithmetic number, because the mean of its divisors is an integer number (48780).

2⁴³⁸⁸⁸⁵ is an apocalyptic number.

438885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438885 is a deficient number, since it is larger than the sum of its proper divisors (341595).

438885 is a wasteful number, since it uses less digits than its factorization.

438885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3259 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 438885 is about 662.4839620700. The cubic root of 438885 is about 75.9947480212.

The spelling of 438885 in words is "four hundred thirty-eight thousand, eight hundred eighty-five".