8109386969 has 2 divisors, whose sum is σ = 8109386970. Its totient is φ = 8109386968.

The previous prime is 8109386947. The next prime is 8109386981. The reversal of 8109386969 is 9696839018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7062217369 + 1047169600 = 84037^2 + 32360^2 .

It is a cyclic number.

It is not a de Polignac number, because 8109386969 - 2¹² = 8109382873 is a prime.

It is a super-2 number, since 2×8109386969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8109886969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4054693484 + 4054693485.

It is an arithmetic number, because the mean of its divisors is an integer number (4054693485).

Almost surely, 2^8109386969 is an apocalyptic number.

It is an amenable number.

8109386969 is a deficient number, since it is larger than the sum of its proper divisors (1).

8109386969 is an equidigital number, since it uses as much as digits as its factorization.

8109386969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 8109386969 is about 90052.1347276121. The cubic root of 8109386969 is about 2009.0743465989.

The spelling of 8109386969 in words is "eight billion, one hundred nine million, three hundred eighty-six thousand, nine hundred sixty-nine".