12444219 has 32 divisors (see below), whose sum is σ = 19929600. Its totient is φ = 7650720.

The previous prime is 12444193. The next prime is 12444239. The reversal of 12444219 is 91244421.

It is a happy number.

12444219 is a `hidden beast` number, since 1 + 2 + 444 + 219 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-12444219 is a prime.

It is a super-2 number, since 2×12444219² = 309717173039922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12444192 and 12444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17664 + ... + 18354.

It is an arithmetic number, because the mean of its divisors is an integer number (622800).

Almost surely, 2^12444219 is an apocalyptic number.

12444219 is a deficient number, since it is larger than the sum of its proper divisors (7485381).

12444219 is a wasteful number, since it uses less digits than its factorization.

12444219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 746 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12444219 is about 3527.6364608616. The cubic root of 12444219 is about 231.7337102740.

The spelling of 12444219 in words is "twelve million, four hundred forty-four thousand, two hundred nineteen".