6245909 has 2 divisors, whose sum is σ = 6245910. Its totient is φ = 6245908.

The previous prime is 6245887. The next prime is 6245923. The reversal of 6245909 is 9095426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 605284 = 2375^2 + 778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6245909 is a prime.

It is a super-2 number, since 2×6245909² = 78022758472562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6245929) 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, 3122954 + 3122955.

It is an arithmetic number, because the mean of its divisors is an integer number (3122955).

Almost surely, 2^6245909 is an apocalyptic number.

It is an amenable number.

6245909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6245909 is an equidigital number, since it uses as much as digits as its factorization.

6245909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 6245909 is about 2499.1816660659. The cubic root of 6245909 is about 184.1613758322.

The spelling of 6245909 in words is "six million, two hundred forty-five thousand, nine hundred nine".