442443304139 has 2 divisors, whose sum is σ = 442443304140. Its totient is φ = 442443304138.

The previous prime is 442443304099. The next prime is 442443304183. The reversal of 442443304139 is 931403344244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442443304139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442443304096 and 442443304105.

It is not a weakly prime, because it can be changed into another prime (442443304339) 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, 221221652069 + 221221652070.

It is an arithmetic number, because the mean of its divisors is an integer number (221221652070).

Almost surely, 2^442443304139 is an apocalyptic number.

442443304139 is a deficient number, since it is larger than the sum of its proper divisors (1).

442443304139 is an equidigital number, since it uses as much as digits as its factorization.

442443304139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 442443304139 in words is "four hundred forty-two billion, four hundred forty-three million, three hundred four thousand, one hundred thirty-nine".