438394 has 8 divisors (see below), whose sum is σ = 717408. Its totient is φ = 199260.

The previous prime is 438391. The next prime is 438401. The reversal of 438394 is 493834.

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

It is not an unprimeable number, because it can be changed into a prime (438391) 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, 9942 + ... + 9985.

It is an arithmetic number, because the mean of its divisors is an integer number (89676).

2⁴³⁸³⁹⁴ is an apocalyptic number.

438394 is a deficient number, since it is larger than the sum of its proper divisors (279014).

438394 is a wasteful number, since it uses less digits than its factorization.

438394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19940.

The product of its digits is 10368, while the sum is 31.

The square root of 438394 is about 662.1132833587. The cubic root of 438394 is about 75.9663978880.

The spelling of 438394 in words is "four hundred thirty-eight thousand, three hundred ninety-four".