411192809 has 2 divisors, whose sum is σ = 411192810. Its totient is φ = 411192808.

The previous prime is 411192779. The next prime is 411192823. The reversal of 411192809 is 908291114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327067225 + 84125584 = 18085^2 + 9172^2 .

It is a cyclic number.

It is not a de Polignac number, because 411192809 - 2²⁰ = 410144233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (411192829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205596404 + 205596405.

It is an arithmetic number, because the mean of its divisors is an integer number (205596405).

Almost surely, 2^411192809 is an apocalyptic number.

It is an amenable number.

411192809 is a deficient number, since it is larger than the sum of its proper divisors (1).

411192809 is an equidigital number, since it uses as much as digits as its factorization.

411192809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 411192809 is about 20277.8896584433. The cubic root of 411192809 is about 743.6156198712.

The spelling of 411192809 in words is "four hundred eleven million, one hundred ninety-two thousand, eight hundred nine".