43440140441 has 8 divisors (see below), whose sum is σ = 44079452424. Its totient is φ = 42802024320.

The previous prime is 43440140431. The next prime is 43440140489. The reversal of 43440140441 is 14404104434.

It can be written as a sum of positive squares in 4 ways, for example, as 17657094400 + 25783046041 = 132880^2 + 160571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43440140441 - 2⁶ = 43440140377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43440140431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225650 + ... + 371211.

It is an arithmetic number, because the mean of its divisors is an integer number (5509931553).

Almost surely, 2^43440140441 is an apocalyptic number.

It is an amenable number.

43440140441 is a deficient number, since it is larger than the sum of its proper divisors (639311983).

43440140441 is an equidigital number, since it uses as much as digits as its factorization.

43440140441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597931.

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

Adding to 43440140441 its reverse (14404104434), we get a palindrome (57844244875).

The spelling of 43440140441 in words is "forty-three billion, four hundred forty million, one hundred forty thousand, four hundred forty-one".