4400440003991 has 2 divisors, whose sum is σ = 4400440003992. Its totient is φ = 4400440003990.

The previous prime is 4400440003889. The next prime is 4400440004027. The reversal of 4400440003991 is 1993000440044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4400440003991 - 2³⁰ = 4399366262167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4400440005991) 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 as a sum of consecutive naturals, namely, 2200220001995 + 2200220001996.

It is an arithmetic number, because the mean of its divisors is an integer number (2200220001996).

Almost surely, 2^{4400440003991} is an apocalyptic number.

4400440003991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4400440003991 is an equidigital number, since it uses as much as digits as its factorization.

4400440003991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 4400440003991 in words is "four trillion, four hundred billion, four hundred forty million, three thousand, nine hundred ninety-one".