438004 has 12 divisors (see below), whose sum is σ = 876064. Its totient is φ = 187704.

The previous prime is 438001. The next prime is 438017. The reversal of 438004 is 400834.

438004 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7794 + ... + 7849.

2⁴³⁸⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

438004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438004 is a wasteful number, since it uses less digits than its factorization.

438004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15654 (or 15652 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 438004 is about 661.8187062935. The cubic root of 438004 is about 75.9438643641.

Adding to 438004 its reverse (400834), we get a palindrome (838838).

The spelling of 438004 in words is "four hundred thirty-eight thousand, four".