11243729 has 4 divisors (see below), whose sum is σ = 12849984. Its totient is φ = 9637476.

The previous prime is 11243723. The next prime is 11243737. The reversal of 11243729 is 92734211.

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 11243729 - 2¹² = 11239633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11243723) 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, 803117 + ... + 803130.

It is an arithmetic number, because the mean of its divisors is an integer number (3212496).

Almost surely, 2^11243729 is an apocalyptic number.

It is an amenable number.

11243729 is a deficient number, since it is larger than the sum of its proper divisors (1606255).

11243729 is an equidigital number, since it uses as much as digits as its factorization.

11243729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606254.

The product of its digits is 3024, while the sum is 29.

The square root of 11243729 is about 3353.1670104544. The cubic root of 11243729 is about 224.0285956797.

The spelling of 11243729 in words is "eleven million, two hundred forty-three thousand, seven hundred twenty-nine".