438229 has 4 divisors (see below), whose sum is σ = 478080. Its totient is φ = 398380.

The previous prime is 438223. The next prime is 438233. The reversal of 438229 is 922834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438229 - 2¹¹ = 436181 is a prime.

It is a Duffinian number.

438229 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 438197 and 438206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438223) 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 3 ways as a sum of consecutive naturals, for example, 19909 + ... + 19930.

It is an arithmetic number, because the mean of its divisors is an integer number (119520).

2⁴³⁸²²⁹ is an apocalyptic number.

It is an amenable number.

438229 is a deficient number, since it is larger than the sum of its proper divisors (39851).

438229 is a wasteful number, since it uses less digits than its factorization.

438229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39850.

The product of its digits is 3456, while the sum is 28.

The square root of 438229 is about 661.9886705979. The cubic root of 438229 is about 75.9568661057.

The spelling of 438229 in words is "four hundred thirty-eight thousand, two hundred twenty-nine".