4243441439 has 2 divisors, whose sum is σ = 4243441440. Its totient is φ = 4243441438.

The previous prime is 4243441387. The next prime is 4243441441. The reversal of 4243441439 is 9341443424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4243441439 - 2¹² = 4243437343 is a prime.

Together with 4243441441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243441639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121720719 + 2121720720.

It is an arithmetic number, because the mean of its divisors is an integer number (2121720720).

Almost surely, 2^4243441439 is an apocalyptic number.

4243441439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243441439 is an equidigital number, since it uses as much as digits as its factorization.

4243441439 is an evil number, because the sum of its binary digits is even.

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

The square root of 4243441439 is about 65141.7027640512. The cubic root of 4243441439 is about 1618.9722484629.

The spelling of 4243441439 in words is "four billion, two hundred forty-three million, four hundred forty-one thousand, four hundred thirty-nine".