844402948231 has 16 divisors (see below), whose sum is σ = 849981081600. Its totient is φ = 838844674528.

The previous prime is 844402948217. The next prime is 844402948253. The reversal of 844402948231 is 132849204448.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 844402948231 - 2²⁹ = 843866077319 is a prime.

It is a super-2 number, since 2×844402948231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844402942231) 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 in 15 ways as a sum of consecutive naturals, for example, 210100740 + ... + 210104758.

It is an arithmetic number, because the mean of its divisors is an integer number (53123817600).

Almost surely, 2^844402948231 is an apocalyptic number.

844402948231 is a deficient number, since it is larger than the sum of its proper divisors (5578133369).

844402948231 is a wasteful number, since it uses less digits than its factorization.

844402948231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158.

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 844402948231 in words is "eight hundred forty-four billion, four hundred two million, nine hundred forty-eight thousand, two hundred thirty-one".