1244422444 has 12 divisors (see below), whose sum is σ = 2197012104. Its totient is φ = 616704704.

The previous prime is 1244422433. The next prime is 1244422463. The reversal of 1244422444 is 4442244421.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376122 + ... + 1377025.

It is an arithmetic number, because the mean of its divisors is an integer number (183084342).

Almost surely, 2^1244422444 is an apocalyptic number.

It is an amenable number.

1244422444 is a deficient number, since it is larger than the sum of its proper divisors (952589660).

1244422444 is a wasteful number, since it uses less digits than its factorization.

1244422444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753264 (or 2753262 counting only the distinct ones).

The product of its digits is 32768, while the sum is 31.

The square root of 1244422444 is about 35276.3723191600. The cubic root of 1244422444 is about 1075.6127587146.

Adding to 1244422444 its reverse (4442244421), we get a palindrome (5686666865).

The spelling of 1244422444 in words is "one billion, two hundred forty-four million, four hundred twenty-two thousand, four hundred forty-four".