8247821219 has 16 divisors (see below), whose sum is σ = 9538907136. Its totient is φ = 7060024800.

The previous prime is 8247821209. The next prime is 8247821227. The reversal of 8247821219 is 9121287428.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8247821219 is a prime.

It is a super-2 number, since 2×8247821219² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8247821219.

It is not an unprimeable number, because it can be changed into a prime (8247821209) 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, 314237 + ... + 339470.

It is an arithmetic number, because the mean of its divisors is an integer number (596181696).

Almost surely, 2^8247821219 is an apocalyptic number.

8247821219 is a deficient number, since it is larger than the sum of its proper divisors (1291085917).

8247821219 is a wasteful number, since it uses less digits than its factorization.

8247821219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653786.

The product of its digits is 129024, while the sum is 44.

The square root of 8247821219 is about 90817.5160362801. The cubic root of 8247821219 is about 2020.4421163272.

The spelling of 8247821219 in words is "eight billion, two hundred forty-seven million, eight hundred twenty-one thousand, two hundred nineteen".