411565991 has 2 divisors, whose sum is σ = 411565992. Its totient is φ = 411565990.

The previous prime is 411565967. The next prime is 411565997. The reversal of 411565991 is 199565114.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 411565991 - 2⁶ = 411565927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411565997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205782995 + 205782996.

It is an arithmetic number, because the mean of its divisors is an integer number (205782996).

Almost surely, 2^411565991 is an apocalyptic number.

411565991 is a deficient number, since it is larger than the sum of its proper divisors (1).

411565991 is an equidigital number, since it uses as much as digits as its factorization.

411565991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 41.

The square root of 411565991 is about 20287.0892687936. The cubic root of 411565991 is about 743.8405103605.

The spelling of 411565991 in words is "four hundred eleven million, five hundred sixty-five thousand, nine hundred ninety-one".