6869426209 has 2 divisors, whose sum is σ = 6869426210. Its totient is φ = 6869426208.

The previous prime is 6869426203. The next prime is 6869426237. The reversal of 6869426209 is 9026249686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6707118609 + 162307600 = 81897^2 + 12740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6869426209 is a prime.

It is a super-2 number, since 2×6869426209² = 94378032881792223362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6869426203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3434713104 + 3434713105.

It is an arithmetic number, because the mean of its divisors is an integer number (3434713105).

Almost surely, 2^6869426209 is an apocalyptic number.

It is an amenable number.

6869426209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6869426209 is an equidigital number, since it uses as much as digits as its factorization.

6869426209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The square root of 6869426209 is about 82882.0017193118. The cubic root of 6869426209 is about 1900.9622281234.

The spelling of 6869426209 in words is "six billion, eight hundred sixty-nine million, four hundred twenty-six thousand, two hundred nine".