12322729 has 4 divisors (see below), whose sum is σ = 12349584. Its totient is φ = 12295876.

The previous prime is 12322711. The next prime is 12322771. The reversal of 12322729 is 92722321.

12322729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12322729 - 2⁹ = 12322217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12322697 and 12322706.

It is not an unprimeable number, because it can be changed into a prime (12322529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12727 + ... + 13660.

It is an arithmetic number, because the mean of its divisors is an integer number (3087396).

Almost surely, 2^12322729 is an apocalyptic number.

It is an amenable number.

12322729 is a deficient number, since it is larger than the sum of its proper divisors (26855).

12322729 is an equidigital number, since it uses as much as digits as its factorization.

12322729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26854.

The product of its digits is 3024, while the sum is 28.

The square root of 12322729 is about 3510.3744814478. The cubic root of 12322729 is about 230.9771221010.

It can be divided in two parts, 123227 and 29, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 12322729 in words is "twelve million, three hundred twenty-two thousand, seven hundred twenty-nine".