1440133444 has 12 divisors (see below), whose sum is σ = 2668482684. Its totient is φ = 677709824.

The previous prime is 1440133403. The next prime is 1440133459. The reversal of 1440133444 is 4443310441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 523860544 + 916272900 = 22888^2 + 30270^2 .

It is a super-2 number, since 2×1440133444² = 4147968673054602272, which contains 22 as substring.

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, 10589149 + ... + 10589284.

It is an arithmetic number, because the mean of its divisors is an integer number (222373557).

Almost surely, 2^1440133444 is an apocalyptic number.

It is an amenable number.

1440133444 is a deficient number, since it is larger than the sum of its proper divisors (1228349240).

1440133444 is a wasteful number, since it uses less digits than its factorization.

1440133444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21178454 (or 21178452 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1440133444 is about 37949.0901603714. The cubic root of 1440133444 is about 1129.2781156942.

Adding to 1440133444 its reverse (4443310441), we get a palindrome (5883443885).

The spelling of 1440133444 in words is "one billion, four hundred forty million, one hundred thirty-three thousand, four hundred forty-four".