8236941989 has 2 divisors, whose sum is σ = 8236941990. Its totient is φ = 8236941988.

The previous prime is 8236941971. The next prime is 8236942001. The reversal of 8236941989 is 9891496328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8025472225 + 211469764 = 89585^2 + 14542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8236941989 is a prime.

It is a super-2 number, since 2×8236941989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8236941929) 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, 4118470994 + 4118470995.

It is an arithmetic number, because the mean of its divisors is an integer number (4118470995).

Almost surely, 2^8236941989 is an apocalyptic number.

It is an amenable number.

8236941989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8236941989 is an equidigital number, since it uses as much as digits as its factorization.

8236941989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 59.

The square root of 8236941989 is about 90757.6001721068. The cubic root of 8236941989 is about 2019.5533755089.

The spelling of 8236941989 in words is "eight billion, two hundred thirty-six million, nine hundred forty-one thousand, nine hundred eighty-nine".