442248074789 has 2 divisors, whose sum is σ = 442248074790. Its totient is φ = 442248074788.

The previous prime is 442248074767. The next prime is 442248074809. The reversal of 442248074789 is 987470842244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441881926564 + 366148225 = 664742^2 + 19135^2 .

It is a cyclic number.

It is not a de Polignac number, because 442248074789 - 2²⁰ = 442247026213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442248074089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221124037394 + 221124037395.

It is an arithmetic number, because the mean of its divisors is an integer number (221124037395).

Almost surely, 2^442248074789 is an apocalyptic number.

It is an amenable number.

442248074789 is a deficient number, since it is larger than the sum of its proper divisors (1).

442248074789 is an equidigital number, since it uses as much as digits as its factorization.

442248074789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28901376, while the sum is 59.

The spelling of 442248074789 in words is "four hundred forty-two billion, two hundred forty-eight million, seventy-four thousand, seven hundred eighty-nine".