438534 has 20 divisors (see below), whose sum is σ = 983004. Its totient is φ = 146124.

The previous prime is 438533. The next prime is 438551. The reversal of 438534 is 435834.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 438498 and 438507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438533) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1192 + ... + 1515.

2⁴³⁸⁵³⁴ is an apocalyptic number.

438534 is an abundant number, since it is smaller than the sum of its proper divisors (544470).

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

438534 is a wasteful number, since it uses less digits than its factorization.

438534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2712 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 438534 is about 662.2189970093. The cubic root of 438534 is about 75.9744835855.

The spelling of 438534 in words is "four hundred thirty-eight thousand, five hundred thirty-four".