12444440 has 16 divisors (see below), whose sum is σ = 28000080. Its totient is φ = 4977760.

The previous prime is 12444437. The next prime is 12444473. The reversal of 12444440 is 4444421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155516 + ... + 155595.

It is an arithmetic number, because the mean of its divisors is an integer number (1750005).

Almost surely, 2^12444440 is an apocalyptic number.

12444440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444440 is an abundant number, since it is smaller than the sum of its proper divisors (15555640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12444440 is a wasteful number, since it uses less digits than its factorization.

12444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311122 (or 311118 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 12444440 is about 3527.6677848119. The cubic root of 12444440 is about 231.7350820716.

Adding to 12444440 its reverse (4444421), we get a palindrome (16888861).

The spelling of 12444440 in words is "twelve million, four hundred forty-four thousand, four hundred forty".