411815609 has 2 divisors, whose sum is σ = 411815610. Its totient is φ = 411815608.

The previous prime is 411815543. The next prime is 411815611. The reversal of 411815609 is 906518114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311875600 + 99940009 = 17660^2 + 9997^2 .

It is a cyclic number.

It is not a de Polignac number, because 411815609 - 2²⁰ = 410767033 is a prime.

Together with 411815611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (411815639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205907804 + 205907805.

It is an arithmetic number, because the mean of its divisors is an integer number (205907805).

Almost surely, 2^411815609 is an apocalyptic number.

It is an amenable number.

411815609 is a deficient number, since it is larger than the sum of its proper divisors (1).

411815609 is an equidigital number, since it uses as much as digits as its factorization.

411815609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 411815609 is about 20293.2404755869. The cubic root of 411815609 is about 743.9908616685.

The spelling of 411815609 in words is "four hundred eleven million, eight hundred fifteen thousand, six hundred nine".