822169 has 2 divisors, whose sum is σ = 822170. Its totient is φ = 822168.

The previous prime is 822167. The next prime is 822191. The reversal of 822169 is 961228.

It is a happy number.

822169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 149769 = 820^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 822169 - 2¹ = 822167 is a prime.

It is a super-2 number, since 2×822169² = 1351923729122, which contains 22 as substring.

Together with 822167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (822161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411084 + 411085.

It is an arithmetic number, because the mean of its divisors is an integer number (411085).

2⁸²²¹⁶⁹ is an apocalyptic number.

It is an amenable number.

822169 is a deficient number, since it is larger than the sum of its proper divisors (1).

822169 is an equidigital number, since it uses as much as digits as its factorization.

822169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 822169 is about 906.7353527904. The cubic root of 822169 is about 93.6814705110.

The spelling of 822169 in words is "eight hundred twenty-two thousand, one hundred sixty-nine".