438393 has 8 divisors (see below), whose sum is σ = 604800. Its totient is φ = 282128.

The previous prime is 438391. The next prime is 438401. The reversal of 438393 is 393834.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 438393 - 2¹ = 438391 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 438393.

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 7 ways as a sum of consecutive naturals, for example, 2433 + ... + 2606.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁴³⁸³⁹³ is an apocalyptic number.

It is an amenable number.

438393 is a deficient number, since it is larger than the sum of its proper divisors (166407).

438393 is a wasteful number, since it uses less digits than its factorization.

438393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071.

The product of its digits is 7776, while the sum is 30.

The square root of 438393 is about 662.1125282005. The cubic root of 438393 is about 75.9663401268.

The spelling of 438393 in words is "four hundred thirty-eight thousand, three hundred ninety-three".