12440255 has 8 divisors (see below), whose sum is σ = 14985024. Its totient is φ = 9914400.

The previous prime is 12440249. The next prime is 12440273. The reversal of 12440255 is 55204421.

It is a happy number.

12440255 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12440255 - 2⁶ = 12440191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12440255.

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 7 ways as a sum of consecutive naturals, for example, 3236 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (1873128).

Almost surely, 2^12440255 is an apocalyptic number.

12440255 is a deficient number, since it is larger than the sum of its proper divisors (2544769).

12440255 is an equidigital number, since it uses as much as digits as its factorization.

12440255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12440255 is about 3527.0745668330. The cubic root of 12440255 is about 231.7091020609.

Adding to 12440255 its reverse (55204421), we get a palindrome (67644676).

The spelling of 12440255 in words is "twelve million, four hundred forty thousand, two hundred fifty-five".