8021732879 has 2 divisors, whose sum is σ = 8021732880. Its totient is φ = 8021732878.

The previous prime is 8021732827. The next prime is 8021732921. The reversal of 8021732879 is 9782371208.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8021732879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8021732809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4010866439 + 4010866440.

It is an arithmetic number, because the mean of its divisors is an integer number (4010866440).

Almost surely, 2^8021732879 is an apocalyptic number.

8021732879 is a deficient number, since it is larger than the sum of its proper divisors (1).

8021732879 is an equidigital number, since it uses as much as digits as its factorization.

8021732879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 8021732879 is about 89564.1271882890. The cubic root of 8021732879 is about 2001.8094357275.

The spelling of 8021732879 in words is "eight billion, twenty-one million, seven hundred thirty-two thousand, eight hundred seventy-nine".