1443440441 has 4 divisors (see below), whose sum is σ = 1446599412. Its totient is φ = 1440281472.

The previous prime is 1443440423. The next prime is 1443440443. The reversal of 1443440441 is 1440443441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1384212025 + 59228416 = 37205^2 + 7696^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443440441 - 2³⁰ = 369698617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443440443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578800 + ... + 1579713.

It is an arithmetic number, because the mean of its divisors is an integer number (361649853).

Almost surely, 2^1443440441 is an apocalyptic number.

It is an amenable number.

1443440441 is a deficient number, since it is larger than the sum of its proper divisors (3158971).

1443440441 is an equidigital number, since it uses as much as digits as its factorization.

1443440441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158970.

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 1443440441 is about 37992.6366681756. The cubic root of 1443440441 is about 1130.1418468657.

Adding to 1443440441 its reverse (1440443441), we get a palindrome (2883883882).

The spelling of 1443440441 in words is "one billion, four hundred forty-three million, four hundred forty thousand, four hundred forty-one".