438389 has 4 divisors (see below), whose sum is σ = 501024. Its totient is φ = 375756.

The previous prime is 438377. The next prime is 438391. The reversal of 438389 is 983834.

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 438389 - 2⁸ = 438133 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 (438329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31307 + ... + 31320.

It is an arithmetic number, because the mean of its divisors is an integer number (125256).

2⁴³⁸³⁸⁹ is an apocalyptic number.

It is an amenable number.

438389 is a deficient number, since it is larger than the sum of its proper divisors (62635).

438389 is an equidigital number, since it uses as much as digits as its factorization.

438389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62634.

The product of its digits is 20736, while the sum is 35.

The square root of 438389 is about 662.1095075590. The cubic root of 438389 is about 75.9661090812.

The spelling of 438389 in words is "four hundred thirty-eight thousand, three hundred eighty-nine".