6909939793 has 2 divisors, whose sum is σ = 6909939794. Its totient is φ = 6909939792.

The previous prime is 6909939791. The next prime is 6909939811. The reversal of 6909939793 is 3979399096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5913148609 + 996791184 = 76897^2 + 31572^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909939793 - 2¹ = 6909939791 is a prime.

Together with 6909939791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6909939791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454969896 + 3454969897.

It is an arithmetic number, because the mean of its divisors is an integer number (3454969897).

Almost surely, 2^6909939793 is an apocalyptic number.

It is an amenable number.

6909939793 is a deficient number, since it is larger than the sum of its proper divisors (1).

6909939793 is an equidigital number, since it uses as much as digits as its factorization.

6909939793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22320522, while the sum is 64.

The square root of 6909939793 is about 83126.0476204661. The cubic root of 6909939793 is about 1904.6919857566.

The spelling of 6909939793 in words is "six billion, nine hundred nine million, nine hundred thirty-nine thousand, seven hundred ninety-three".