415485809 has 2 divisors, whose sum is σ = 415485810. Its totient is φ = 415485808.

The previous prime is 415485803. The next prime is 415485817. The reversal of 415485809 is 908584514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327501409 + 87984400 = 18097^2 + 9380^2 .

It is a cyclic number.

It is not a de Polignac number, because 415485809 - 2⁴ = 415485793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 415485809.

It is not a weakly prime, because it can be changed into another prime (415485803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207742904 + 207742905.

It is an arithmetic number, because the mean of its divisors is an integer number (207742905).

Almost surely, 2^415485809 is an apocalyptic number.

It is an amenable number.

415485809 is a deficient number, since it is larger than the sum of its proper divisors (1).

415485809 is an equidigital number, since it uses as much as digits as its factorization.

415485809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 415485809 is about 20383.4690129036. The cubic root of 415485809 is about 746.1945366630.

The spelling of 415485809 in words is "four hundred fifteen million, four hundred eighty-five thousand, eight hundred nine".