8444721846 has 32 divisors (see below), whose sum is σ = 18483758208. Its totient is φ = 2550824640.

The previous prime is 8444721841. The next prime is 8444721847. The reversal of 8444721846 is 6481274448.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 8444721795 and 8444721804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8444721841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183736 + ... + 225051.

It is an arithmetic number, because the mean of its divisors is an integer number (577617444).

Almost surely, 2^8444721846 is an apocalyptic number.

8444721846 is an abundant number, since it is smaller than the sum of its proper divisors (10039036362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8444721846 is a wasteful number, since it uses less digits than its factorization.

8444721846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409116.

The product of its digits is 1376256, while the sum is 48.

The square root of 8444721846 is about 91895.1676966749. The cubic root of 8444721846 is about 2036.3938795796.

The spelling of 8444721846 in words is "eight billion, four hundred forty-four million, seven hundred twenty-one thousand, eight hundred forty-six".