4244424403991 has 2 divisors, whose sum is σ = 4244424403992. Its totient is φ = 4244424403990.

The previous prime is 4244424403963. The next prime is 4244424404123. The reversal of 4244424403991 is 1993044244424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4244424403991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4244424403591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122212201995 + 2122212201996.

It is an arithmetic number, because the mean of its divisors is an integer number (2122212201996).

Almost surely, 2^{4244424403991} is an apocalyptic number.

4244424403991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4244424403991 is an equidigital number, since it uses as much as digits as its factorization.

4244424403991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 50.

The spelling of 4244424403991 in words is "four trillion, two hundred forty-four billion, four hundred twenty-four million, four hundred three thousand, nine hundred ninety-one".