1224144444 has 24 divisors (see below), whose sum is σ = 2860053840. Its totient is φ = 407517184.

The previous prime is 1224144443. The next prime is 1224144463. The reversal of 1224144444 is 4444414221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224144443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56709 + ... + 75260.

It is an arithmetic number, because the mean of its divisors is an integer number (119168910).

Almost surely, 2^1224144444 is an apocalyptic number.

It is an amenable number.

1224144444 is an abundant number, since it is smaller than the sum of its proper divisors (1635909396).

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

1224144444 is a wasteful number, since it uses less digits than its factorization.

1224144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132749 (or 132747 counting only the distinct ones).

The product of its digits is 16384, while the sum is 30.

The square root of 1224144444 is about 34987.7756366420. The cubic root of 1224144444 is about 1069.7383248076.

Adding to 1224144444 its reverse (4444414221), we get a palindrome (5668558665).

The spelling of 1224144444 in words is "one billion, two hundred twenty-four million, one hundred forty-four thousand, four hundred forty-four".