438213 has 12 divisors (see below), whose sum is σ = 605760. Its totient is φ = 281736.

The previous prime is 438211. The next prime is 438223. The reversal of 438213 is 312834.

It is a happy number.

It is not a de Polignac number, because 438213 - 2¹ = 438211 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 438213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438211) 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, 5508 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (50480).

2⁴³⁸²¹³ is an apocalyptic number.

438213 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

438213 is a deficient number, since it is larger than the sum of its proper divisors (167547).

438213 is an equidigital number, since it uses as much as digits as its factorization.

438213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 125 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 438213 is about 661.9765856886. The cubic root of 438213 is about 75.9559416844.

It can be divided in two parts, 43 and 8213, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 438213 in words is "four hundred thirty-eight thousand, two hundred thirteen".