6494909 has 2 divisors, whose sum is σ = 6494910. Its totient is φ = 6494908.

The previous prime is 6494881. The next prime is 6494911. The reversal of 6494909 is 9094946.

6494909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4214809 + 2280100 = 2053^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 6494909 - 2¹⁶ = 6429373 is a prime.

Together with 6494911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6494959) 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, 3247454 + 3247455.

It is an arithmetic number, because the mean of its divisors is an integer number (3247455).

Almost surely, 2^6494909 is an apocalyptic number.

It is an amenable number.

6494909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6494909 is an equidigital number, since it uses as much as digits as its factorization.

6494909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 6494909 is about 2548.5111339761. The cubic root of 6494909 is about 186.5768214883.

The spelling of 6494909 in words is "six million, four hundred ninety-four thousand, nine hundred nine".