8243447922 has 48 divisors (see below), whose sum is σ = 18596384352. Its totient is φ = 2736828000.

The previous prime is 8243447879. The next prime is 8243447969. The reversal of 8243447922 is 2297443428.

It is a happy number.

8243447922 is a `hidden beast` number, since 82 + 43 + 447 + 92 + 2 = 666.

It is a super-2 number, since 2×8243447922² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88198 + ... + 155774.

It is an arithmetic number, because the mean of its divisors is an integer number (387424674).

Almost surely, 2^8243447922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8243447922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9298192176).

8243447922 is an abundant number, since it is smaller than the sum of its proper divisors (10352936430).

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

8243447922 is a wasteful number, since it uses less digits than its factorization.

8243447922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67845 (or 67833 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 8243447922 is about 90793.4354565351. The cubic root of 8243447922 is about 2020.0849490465.

The spelling of 8243447922 in words is "eight billion, two hundred forty-three million, four hundred forty-seven thousand, nine hundred twenty-two".