1244543441 has 2 divisors, whose sum is σ = 1244543442. Its totient is φ = 1244543440.

The previous prime is 1244543431. The next prime is 1244543527. The reversal of 1244543441 is 1443454421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206103441 + 38440000 = 34729^2 + 6200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244543441 - 2¹⁰ = 1244542417 is a prime.

It is a super-2 number, since 2×1244543441² = 3097776753072240962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244543398 and 1244543407.

It is not a weakly prime, because it can be changed into another prime (1244543431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622271720 + 622271721.

It is an arithmetic number, because the mean of its divisors is an integer number (622271721).

Almost surely, 2^1244543441 is an apocalyptic number.

It is an amenable number.

1244543441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244543441 is an equidigital number, since it uses as much as digits as its factorization.

1244543441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 32.

The square root of 1244543441 is about 35278.0872639093. The cubic root of 1244543441 is about 1075.6476187146.

Adding to 1244543441 its reverse (1443454421), we get a palindrome (2687997862).

The spelling of 1244543441 in words is "one billion, two hundred forty-four million, five hundred forty-three thousand, four hundred forty-one".