12322809 has 6 divisors (see below), whose sum is σ = 17799626. Its totient is φ = 8215200.

The previous prime is 12322787. The next prime is 12322819. The reversal of 12322809 is 90822321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 1432809 = 3300^2 + 1197^2 .

It is not a de Polignac number, because 12322809 - 2²³ = 3934201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12322819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684592 + ... + 684609.

Almost surely, 2^12322809 is an apocalyptic number.

It is an amenable number.

12322809 is a deficient number, since it is larger than the sum of its proper divisors (5476817).

12322809 is a wasteful number, since it uses less digits than its factorization.

12322809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369207 (or 1369204 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12322809 is about 3510.3858762250. The cubic root of 12322809 is about 230.9776219397.

It can be divided in two parts, 12322 and 809, that added together give a palindrome (13131).

The spelling of 12322809 in words is "twelve million, three hundred twenty-two thousand, eight hundred nine".