438543 has 12 divisors (see below), whose sum is σ = 724048. Its totient is φ = 250560.

The previous prime is 438533. The next prime is 438551. The reversal of 438543 is 345834.

It is a happy number.

It is not a de Polignac number, because 438543 - 2⁴ = 438527 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3418 + ... + 3543.

2⁴³⁸⁵⁴³ is an apocalyptic number.

438543 is a deficient number, since it is larger than the sum of its proper divisors (285505).

438543 is a wasteful number, since it uses less digits than its factorization.

438543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974 (or 6971 counting only the distinct ones).

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

The square root of 438543 is about 662.2257923095. The cubic root of 438543 is about 75.9750033214.

Subtracting from 438543 its sum of digits (27), we obtain a triangular number (438516 = T₉₃₆).

The spelling of 438543 in words is "four hundred thirty-eight thousand, five hundred forty-three".