843423 has 8 divisors (see below), whose sum is σ = 1285248. Its totient is φ = 481944.

The previous prime is 843397. The next prime is 843443. The reversal of 843423 is 324348.

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

It is not a de Polignac number, because 843423 - 2¹⁰ = 842399 is a prime.

It is a super-2 number, since 2×843423² = 1422724713858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

843423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 843393 and 843402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (843443) 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, 20061 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (160656).

2⁸⁴³⁴²³ is an apocalyptic number.

843423 is a deficient number, since it is larger than the sum of its proper divisors (441825).

843423 is a wasteful number, since it uses less digits than its factorization.

843423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40173.

The product of its digits is 2304, while the sum is 24.

The square root of 843423 is about 918.3806400398. The cubic root of 843423 is about 94.4818699297.

The spelling of 843423 in words is "eight hundred forty-three thousand, four hundred twenty-three".