8447819133 has 16 divisors (see below), whose sum is σ = 12173080640. Its totient is φ = 5180281344.

The previous prime is 8447819113. The next prime is 8447819189. The reversal of 8447819133 is 3319187448.

It is a happy number.

It is not a de Polignac number, because 8447819133 - 2⁶ = 8447819069 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 (8447819113) 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, 371668 + ... + 393741.

It is an arithmetic number, because the mean of its divisors is an integer number (760817540).

Almost surely, 2^8447819133 is an apocalyptic number.

It is an amenable number.

8447819133 is a deficient number, since it is larger than the sum of its proper divisors (3725261507).

8447819133 is a wasteful number, since it uses less digits than its factorization.

8447819133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765708.

The product of its digits is 580608, while the sum is 48.

The square root of 8447819133 is about 91912.0184361110. The cubic root of 8447819133 is about 2036.6428131915.

The spelling of 8447819133 in words is "eight billion, four hundred forty-seven million, eight hundred nineteen thousand, one hundred thirty-three".