12440446 has 8 divisors (see below), whose sum is σ = 18897120. Its totient is φ = 6141408.

The previous prime is 12440431. The next prime is 12440453. The reversal of 12440446 is 64404421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12440446.

It is a congruent number.

It is an unprimeable number.

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, 39211 + ... + 39526.

It is an arithmetic number, because the mean of its divisors is an integer number (2362140).

Almost surely, 2^12440446 is an apocalyptic number.

12440446 is a deficient number, since it is larger than the sum of its proper divisors (6456674).

12440446 is an equidigital number, since it uses as much as digits as its factorization.

12440446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78818.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 12440446 is about 3527.1016429924. The cubic root of 12440446 is about 231.7102878943.

Adding to 12440446 its reverse (64404421), we get a palindrome (76844867).

The spelling of 12440446 in words is "twelve million, four hundred forty thousand, four hundred forty-six".