438387 has 8 divisors (see below), whose sum is σ = 615360. Its totient is φ = 276840.

The previous prime is 438377. The next prime is 438391. The reversal of 438387 is 783834.

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

It is not a de Polignac number, because 438387 - 2⁷ = 438259 is a prime.

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

438387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (438377) 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, 3789 + ... + 3902.

It is an arithmetic number, because the mean of its divisors is an integer number (76920).

2⁴³⁸³⁸⁷ is an apocalyptic number.

438387 is a deficient number, since it is larger than the sum of its proper divisors (176973).

438387 is a wasteful number, since it uses less digits than its factorization.

438387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713.

The product of its digits is 16128, while the sum is 33.

The square root of 438387 is about 662.1079972331. The cubic root of 438387 is about 75.9659935579.

Adding to 438387 its reverse (783834), we get a palindrome (1222221).

The spelling of 438387 in words is "four hundred thirty-eight thousand, three hundred eighty-seven".