844222 has 4 divisors (see below), whose sum is σ = 1266336. Its totient is φ = 422110.

The previous prime is 844201. The next prime is 844243. The reversal of 844222 is 222448.

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

It is an interprime number because it is at equal distance from previous prime (844201) and next prime (844243).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 844193 and 844202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211054 + ... + 211057.

It is an arithmetic number, because the mean of its divisors is an integer number (316584).

2⁸⁴⁴²²² is an apocalyptic number.

844222 is a deficient number, since it is larger than the sum of its proper divisors (422114).

844222 is a wasteful number, since it uses less digits than its factorization.

844222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422113.

The product of its digits is 1024, while the sum is 22.

The square root of 844222 is about 918.8155418799. The cubic root of 844222 is about 94.5116956867.

It can be divided in two parts, 8442 and 22, that added together give a square (8464 = 92²).

The spelling of 844222 in words is "eight hundred forty-four thousand, two hundred twenty-two".