822109 has 4 divisors (see below), whose sum is σ = 833760. Its totient is φ = 810460.

The previous prime is 822079. The next prime is 822113. The reversal of 822109 is 901228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 822109 - 2¹⁷ = 691037 is a prime.

It is a Duffinian number.

822109 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 822109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822139) 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, 5719 + ... + 5860.

It is an arithmetic number, because the mean of its divisors is an integer number (208440).

2⁸²²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

822109 is a deficient number, since it is larger than the sum of its proper divisors (11651).

822109 is a wasteful number, since it uses less digits than its factorization.

822109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11650.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 822109 is about 906.7022664580. The cubic root of 822109 is about 93.6791915696.

It can be divided in two parts, 822 and 109, that multiplied together give a palindrome (89598).

The spelling of 822109 in words is "eight hundred twenty-two thousand, one hundred nine".