8422171047 has 16 divisors (see below), whose sum is σ = 12879784960. Its totient is φ = 5433658200.

The previous prime is 8422171013. The next prime is 8422171057. The reversal of 8422171047 is 7401712248.

8422171047 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8422171047 - 2¹⁹ = 8421646759 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 (8422171057) 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, 5030329 + ... + 5032002.

It is an arithmetic number, because the mean of its divisors is an integer number (804986560).

Almost surely, 2^8422171047 is an apocalyptic number.

8422171047 is a deficient number, since it is larger than the sum of its proper divisors (4457613913).

8422171047 is a wasteful number, since it uses less digits than its factorization.

8422171047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062371 (or 10062365 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 8422171047 is about 91772.3871706517. The cubic root of 8422171047 is about 2034.5796004888.

The spelling of 8422171047 in words is "eight billion, four hundred twenty-two million, one hundred seventy-one thousand, forty-seven".