408243 has 16 divisors (see below), whose sum is σ = 604800. Its totient is φ = 242880.

The previous prime is 408241. The next prime is 408251. The reversal of 408243 is 342804.

It is a happy number.

It is not a de Polignac number, because 408243 - 2¹ = 408241 is a prime.

408243 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408243.

It is not an unprimeable number, because it can be changed into a prime (408241) 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 15 ways as a sum of consecutive naturals, for example, 2868 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁴⁰⁸²⁴³ is an apocalyptic number.

408243 is a deficient number, since it is larger than the sum of its proper divisors (196557).

408243 is a wasteful number, since it uses less digits than its factorization.

408243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 408243 is about 638.9389642212. The cubic root of 408243 is about 74.1833171106.

The spelling of 408243 in words is "four hundred eight thousand, two hundred forty-three".