822243 has 4 divisors (see below), whose sum is σ = 1096328. Its totient is φ = 548160.

The previous prime is 822233. The next prime is 822253. The reversal of 822243 is 342228.

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 (822233) and next prime (822253).

It is not a de Polignac number, because 822243 - 2¹⁴ = 805859 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 137038 + ... + 137043.

It is an arithmetic number, because the mean of its divisors is an integer number (274082).

2⁸²²²⁴³ is an apocalyptic number.

822243 is a deficient number, since it is larger than the sum of its proper divisors (274085).

822243 is a wasteful number, since it uses less digits than its factorization.

822243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274084.

The product of its digits is 768, while the sum is 21.

The square root of 822243 is about 906.7761576045. The cubic root of 822243 is about 93.6842810528.

The spelling of 822243 in words is "eight hundred twenty-two thousand, two hundred forty-three".