438321 has 8 divisors (see below), whose sum is σ = 629440. Its totient is φ = 269712.

The previous prime is 438313. The next prime is 438329. The reversal of 438321 is 123834.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (438313) and next prime (438329).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 438321 - 2³ = 438313 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 438321.

It is not an unprimeable number, because it can be changed into a prime (438329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5581 + ... + 5658.

It is an arithmetic number, because the mean of its divisors is an integer number (78680).

2⁴³⁸³²¹ is an apocalyptic number.

It is an amenable number.

438321 is a deficient number, since it is larger than the sum of its proper divisors (191119).

438321 is a wasteful number, since it uses less digits than its factorization.

438321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11255.

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

The square root of 438321 is about 662.0581545454. The cubic root of 438321 is about 75.9621810914.

The spelling of 438321 in words is "four hundred thirty-eight thousand, three hundred twenty-one".