43442041439 has 2 divisors, whose sum is σ = 43442041440. Its totient is φ = 43442041438.

The previous prime is 43442041421. The next prime is 43442041463. The reversal of 43442041439 is 93414024434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43442041439 - 2⁸ = 43442041183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43442041939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721020719 + 21721020720.

It is an arithmetic number, because the mean of its divisors is an integer number (21721020720).

Almost surely, 2^43442041439 is an apocalyptic number.

43442041439 is a deficient number, since it is larger than the sum of its proper divisors (1).

43442041439 is an equidigital number, since it uses as much as digits as its factorization.

43442041439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 43442041439 in words is "forty-three billion, four hundred forty-two million, forty-one thousand, four hundred thirty-nine".