243398 has 8 divisors (see below), whose sum is σ = 368280. Its totient is φ = 120640.

The previous prime is 243391. The next prime is 243401. The reversal of 243398 is 893342.

243398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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 243398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (46035).

2²⁴³³⁹⁸ is an apocalyptic number.

243398 is a deficient number, since it is larger than the sum of its proper divisors (124882).

243398 is a wasteful number, since it uses less digits than its factorization.

243398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its digits is 5184, while the sum is 29.

The square root of 243398 is about 493.3538284031. The cubic root of 243398 is about 62.4365649711.

The spelling of 243398 in words is "two hundred forty-three thousand, three hundred ninety-eight".