4260209 has 2 divisors, whose sum is σ = 4260210. Its totient is φ = 4260208.

The previous prime is 4260173. The next prime is 4260229. The reversal of 4260209 is 9020624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 418609 = 1960^2 + 647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4260209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4260229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130104 + 2130105.

It is an arithmetic number, because the mean of its divisors is an integer number (2130105).

Almost surely, 2^4260209 is an apocalyptic number.

It is an amenable number.

4260209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4260209 is an equidigital number, since it uses as much as digits as its factorization.

4260209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4260209 is about 2064.0273738495. The cubic root of 4260209 is about 162.1101851629.

The spelling of 4260209 in words is "four million, two hundred sixty thousand, two hundred nine".