8197322849 has 4 divisors (see below), whose sum is σ = 8206321920. Its totient is φ = 8188323780.

The previous prime is 8197322831. The next prime is 8197322891. The reversal of 8197322849 is 9482237918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8197322849 is a prime.

It is a super-2 number, since 2×8197322849² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8197322849.

It is not an unprimeable number, because it can be changed into a prime (8197322449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4498169 + ... + 4499990.

It is an arithmetic number, because the mean of its divisors is an integer number (2051580480).

Almost surely, 2^8197322849 is an apocalyptic number.

It is an amenable number.

8197322849 is a deficient number, since it is larger than the sum of its proper divisors (8999071).

8197322849 is an equidigital number, since it uses as much as digits as its factorization.

8197322849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8999070.

The product of its digits is 1741824, while the sum is 53.

The square root of 8197322849 is about 90539.0680811328. The cubic root of 8197322849 is about 2016.3101978989.

The spelling of 8197322849 in words is "eight billion, one hundred ninety-seven million, three hundred twenty-two thousand, eight hundred forty-nine".