12192729 has 4 divisors (see below), whose sum is σ = 16256976. Its totient is φ = 8128484.

The previous prime is 12192683. The next prime is 12192743. The reversal of 12192729 is 92729121.

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 12192729 - 2⁷ = 12192601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12192729.

It is not an unprimeable number, because it can be changed into a prime (12192749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032119 + ... + 2032124.

It is an arithmetic number, because the mean of its divisors is an integer number (4064244).

Almost surely, 2^12192729 is an apocalyptic number.

It is an amenable number.

12192729 is a deficient number, since it is larger than the sum of its proper divisors (4064247).

12192729 is an equidigital number, since it uses as much as digits as its factorization.

12192729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064246.

The product of its digits is 4536, while the sum is 33.

The square root of 12192729 is about 3491.8088435652. The cubic root of 12192729 is about 230.1620093591.

It can be divided in two parts, 12192 and 729, that added together give a palindrome (12921).

The spelling of 12192729 in words is "twelve million, one hundred ninety-two thousand, seven hundred twenty-nine".