410040209 has 2 divisors, whose sum is σ = 410040210. Its totient is φ = 410040208.

The previous prime is 410040203. The next prime is 410040223. The reversal of 410040209 is 902040014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322561600 + 87478609 = 17960^2 + 9353^2 .

It is a cyclic number.

It is not a de Polignac number, because 410040209 - 2⁸ = 410039953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (410040203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205020104 + 205020105.

It is an arithmetic number, because the mean of its divisors is an integer number (205020105).

Almost surely, 2^410040209 is an apocalyptic number.

It is an amenable number.

410040209 is a deficient number, since it is larger than the sum of its proper divisors (1).

410040209 is an equidigital number, since it uses as much as digits as its factorization.

410040209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 410040209 is about 20249.4495974582. The cubic root of 410040209 is about 742.9201687984.

The spelling of 410040209 in words is "four hundred ten million, forty thousand, two hundred nine".