6909946249 has 2 divisors, whose sum is σ = 6909946250. Its totient is φ = 6909946248.

The previous prime is 6909946243. The next prime is 6909946289. The reversal of 6909946249 is 9426499096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4131918400 + 2778027849 = 64280^2 + 52707^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909946249 - 2²⁹ = 6373075337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6909946193 and 6909946202.

It is not a weakly prime, because it can be changed into another prime (6909946243) 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, 3454973124 + 3454973125.

It is an arithmetic number, because the mean of its divisors is an integer number (3454973125).

Almost surely, 2^6909946249 is an apocalyptic number.

It is an amenable number.

6909946249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6909946249 is an equidigital number, since it uses as much as digits as its factorization.

6909946249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The square root of 6909946249 is about 83126.0864530503. The cubic root of 6909946249 is about 1904.6925789450.

The spelling of 6909946249 in words is "six billion, nine hundred nine million, nine hundred forty-six thousand, two hundred forty-nine".