438243 has 16 divisors (see below), whose sum is σ = 667296. Its totient is φ = 253440.

The previous prime is 438241. The next prime is 438253. The reversal of 438243 is 342834.

It is a Cunningham number, because it is equal to 662²-1.

It is not a de Polignac number, because 438243 - 2¹ = 438241 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (438241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333 + ... + 993.

It is an arithmetic number, because the mean of its divisors is an integer number (41706).

2⁴³⁸²⁴³ is an apocalyptic number.

438243 is a deficient number, since it is larger than the sum of its proper divisors (229053).

438243 is a wasteful number, since it uses less digits than its factorization.

438243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its digits is 2304, while the sum is 24.

The square root of 438243 is about 661.9992447126. Note that the first 3 decimals coincide. The cubic root of 438243 is about 75.9576749558.

The spelling of 438243 in words is "four hundred thirty-eight thousand, two hundred forty-three".