12440303 has 4 divisors (see below), whose sum is σ = 12460008. Its totient is φ = 12420600.

The previous prime is 12440293. The next prime is 12440317. The reversal of 12440303 is 30304421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12440303 - 2¹⁰ = 12439279 is a prime.

It is a super-2 number, since 2×12440303² = 309522277463618, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8873 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (3115002).

Almost surely, 2^12440303 is an apocalyptic number.

12440303 is a deficient number, since it is larger than the sum of its proper divisors (19705).

12440303 is an equidigital number, since it uses as much as digits as its factorization.

12440303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19704.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12440303 is about 3527.0813713324. The cubic root of 12440303 is about 231.7094000725.

Adding to 12440303 its reverse (30304421), we get a palindrome (42744724).

The spelling of 12440303 in words is "twelve million, four hundred forty thousand, three hundred three".