6242809 has 2 divisors, whose sum is σ = 6242810. Its totient is φ = 6242808.

The previous prime is 6242779. The next prime is 6242813. The reversal of 6242809 is 9082426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4717584 + 1525225 = 2172^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 6242809 - 2¹⁵ = 6210041 is a prime.

It is not a weakly prime, because it can be changed into another prime (6242839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121404 + 3121405.

It is an arithmetic number, because the mean of its divisors is an integer number (3121405).

Almost surely, 2^6242809 is an apocalyptic number.

It is an amenable number.

6242809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6242809 is an equidigital number, since it uses as much as digits as its factorization.

6242809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 6242809 is about 2498.5613860780. The cubic root of 6242809 is about 184.1309028329.

The spelling of 6242809 in words is "six million, two hundred forty-two thousand, eight hundred nine".