844426 has 16 divisors (see below), whose sum is σ = 1397088. Its totient is φ = 379600.

The previous prime is 844421. The next prime is 844427. The reversal of 844426 is 624448.

It is a junction number, because it is equal to n+sod(n) for n = 844394 and 844403.

It is not an unprimeable number, because it can be changed into a prime (844421) by changing a digit.

844426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2736 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (87318).

2⁸⁴⁴⁴²⁶ is an apocalyptic number.

844426 is a deficient number, since it is larger than the sum of its proper divisors (552662).

844426 is a wasteful number, since it uses less digits than its factorization.

844426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437.

The product of its digits is 6144, while the sum is 28.

The square root of 844426 is about 918.9265476631. The cubic root of 844426 is about 94.5193077576.

It can be divided in two parts, 84442 and 6, that added together give a palindrome (84448).

The spelling of 844426 in words is "eight hundred forty-four thousand, four hundred twenty-six".