844406 has 4 divisors (see below), whose sum is σ = 1266612. Its totient is φ = 422202.

The previous prime is 844369. The next prime is 844421. The reversal of 844406 is 604448.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 211100 + ... + 211103.

It is an arithmetic number, because the mean of its divisors is an integer number (316653).

2⁸⁴⁴⁴⁰⁶ is an apocalyptic number.

844406 is a deficient number, since it is larger than the sum of its proper divisors (422206).

844406 is a wasteful number, since it uses less digits than its factorization.

844406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422205.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 844406 is about 918.9156653361. The cubic root of 844406 is about 94.5185615304.

The spelling of 844406 in words is "eight hundred forty-four thousand, four hundred six".