844122517399 has 8 divisors (see below), whose sum is σ = 984399437600. Its totient is φ = 723533586048.

The previous prime is 844122517327. The next prime is 844122517429. The reversal of 844122517399 is 993715221448.

It is not a de Polignac number, because 844122517399 - 2¹¹ = 844122515351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844122515399) 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 in 7 ways as a sum of consecutive naturals, for example, 1230498954 + ... + 1230499639.

It is an arithmetic number, because the mean of its divisors is an integer number (123049929700).

Almost surely, 2^844122517399 is an apocalyptic number.

844122517399 is a deficient number, since it is larger than the sum of its proper divisors (140276920201).

844122517399 is an equidigital number, since it uses as much as digits as its factorization.

844122517399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460998614 (or 2460998600 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The spelling of 844122517399 in words is "eight hundred forty-four billion, one hundred twenty-two million, five hundred seventeen thousand, three hundred ninety-nine".