844447047843 has 32 divisors (see below), whose sum is σ = 1294170142720. Its totient is φ = 479769713280.

The previous prime is 844447047841. The next prime is 844447047889. The reversal of 844447047843 is 348740744448.

It is a happy number.

844447047843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 918938²-1.

It is not a de Polignac number, because 844447047843 - 2¹ = 844447047841 is a prime.

It is a super-2 number, since 2×844447047843² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844447047841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19275798 + ... + 19319556.

It is an arithmetic number, because the mean of its divisors is an integer number (40442816960).

Almost surely, 2^844447047843 is an apocalyptic number.

844447047843 is a deficient number, since it is larger than the sum of its proper divisors (449723094877).

844447047843 is a wasteful number, since it uses less digits than its factorization.

844447047843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49027.

The product of its (nonzero) digits is 38535168, while the sum is 57.

The spelling of 844447047843 in words is "eight hundred forty-four billion, four hundred forty-seven million, forty-seven thousand, eight hundred forty-three".