1243224444 has 48 divisors (see below), whose sum is σ = 3616655616. Its totient is φ = 322915200.

The previous prime is 1243224443. The next prime is 1243224487. The reversal of 1243224444 is 4444223421.

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 (1243224443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671817 + ... + 673664.

It is an arithmetic number, because the mean of its divisors is an integer number (75346992).

Almost surely, 2^1243224444 is an apocalyptic number.

1243224444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1243224444 is an abundant number, since it is smaller than the sum of its proper divisors (2373431172).

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

1243224444 is a wasteful number, since it uses less digits than its factorization.

1243224444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345506 (or 1345504 counting only the distinct ones).

The product of its digits is 24576, while the sum is 30.

The square root of 1243224444 is about 35259.3880264533. The cubic root of 1243224444 is about 1075.2674853398.

Adding to 1243224444 its reverse (4444223421), we get a palindrome (5687447865).

The spelling of 1243224444 in words is "one billion, two hundred forty-three million, two hundred twenty-four thousand, four hundred forty-four".