8197763979 has 4 divisors (see below), whose sum is σ = 10930351976. Its totient is φ = 5465175984.

The previous prime is 8197763947. The next prime is 8197763999. The reversal of 8197763979 is 9793677918.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8197763979 - 2⁵ = 8197763947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8197763929) 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, 1366293994 + ... + 1366293999.

It is an arithmetic number, because the mean of its divisors is an integer number (2732587994).

Almost surely, 2^8197763979 is an apocalyptic number.

8197763979 is a deficient number, since it is larger than the sum of its proper divisors (2732587997).

8197763979 is a wasteful number, since it uses less digits than its factorization.

8197763979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732587996.

The product of its digits is 36006768, while the sum is 66.

The square root of 8197763979 is about 90541.5041790228. The cubic root of 8197763979 is about 2016.3463657624.

The spelling of 8197763979 in words is "eight billion, one hundred ninety-seven million, seven hundred sixty-three thousand, nine hundred seventy-nine".