14243309 has 4 divisors (see below), whose sum is σ = 14284704. Its totient is φ = 14201916.

The previous prime is 14243287. The next prime is 14243389. The reversal of 14243309 is 90334241.

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 14243309 - 2¹² = 14239213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14243389) 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, 20177 + ... + 20870.

It is an arithmetic number, because the mean of its divisors is an integer number (3571176).

Almost surely, 2^14243309 is an apocalyptic number.

It is an amenable number.

14243309 is a deficient number, since it is larger than the sum of its proper divisors (41395).

14243309 is an equidigital number, since it uses as much as digits as its factorization.

14243309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41394.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 14243309 is about 3774.0308689782. The cubic root of 14243309 is about 242.4024278876.

The spelling of 14243309 in words is "fourteen million, two hundred forty-three thousand, three hundred nine".