4209859 has 2 divisors, whose sum is σ = 4209860. Its totient is φ = 4209858.

The previous prime is 4209853. The next prime is 4209869. The reversal of 4209859 is 9589024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4209859 - 2¹⁹ = 3685571 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4209853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104929 + 2104930.

It is an arithmetic number, because the mean of its divisors is an integer number (2104930).

Almost surely, 2^4209859 is an apocalyptic number.

4209859 is a deficient number, since it is larger than the sum of its proper divisors (1).

4209859 is an equidigital number, since it uses as much as digits as its factorization.

4209859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 4209859 is about 2051.7940929830. The cubic root of 4209859 is about 161.4690103389.

The spelling of 4209859 in words is "four million, two hundred nine thousand, eight hundred fifty-nine".