843404 has 24 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 389376.

The previous prime is 843397. The next prime is 843443. The reversal of 843404 is 404348.

It is a super-2 number, since 2×843404² = 1422660614432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 843404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 843404.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5294 + ... + 5450.

It is an arithmetic number, because the mean of its divisors is an integer number (66360).

2⁸⁴³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

843404 is a deficient number, since it is larger than the sum of its proper divisors (749236).

843404 is a wasteful number, since it uses less digits than its factorization.

843404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 843404 is about 918.3702956869. The cubic root of 843404 is about 94.4811604522.

The spelling of 843404 in words is "eight hundred forty-three thousand, four hundred four".