442444021399 has 2 divisors, whose sum is σ = 442444021400. Its totient is φ = 442444021398.

The previous prime is 442444021343. The next prime is 442444021423. The reversal of 442444021399 is 993120444244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442444021399 - 2¹⁵ = 442443988631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442444021309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221222010699 + 221222010700.

It is an arithmetic number, because the mean of its divisors is an integer number (221222010700).

Almost surely, 2^442444021399 is an apocalyptic number.

442444021399 is a deficient number, since it is larger than the sum of its proper divisors (1).

442444021399 is an equidigital number, since it uses as much as digits as its factorization.

442444021399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 442444021399 in words is "four hundred forty-two billion, four hundred forty-four million, twenty-one thousand, three hundred ninety-nine".