411081997 has 2 divisors, whose sum is σ = 411081998. Its totient is φ = 411081996.

The previous prime is 411081953. The next prime is 411082073. The reversal of 411081997 is 799180114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409091076 + 1990921 = 20226^2 + 1411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-411081997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411084997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205540998 + 205540999.

It is an arithmetic number, because the mean of its divisors is an integer number (205540999).

Almost surely, 2^411081997 is an apocalyptic number.

It is an amenable number.

411081997 is a deficient number, since it is larger than the sum of its proper divisors (1).

411081997 is an equidigital number, since it uses as much as digits as its factorization.

411081997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 411081997 is about 20275.1571387252. The cubic root of 411081997 is about 743.5488150897.

The spelling of 411081997 in words is "four hundred eleven million, eighty-one thousand, nine hundred ninety-seven".