409999136270197 has 2 divisors, whose sum is σ = 409999136270198. Its totient is φ = 409999136270196.

The previous prime is 409999136270159. The next prime is 409999136270201. The reversal of 409999136270197 is 791072631999904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373493928132081 + 36505208138116 = 19325991^2 + 6041954^2 .

It is a cyclic number.

It is not a de Polignac number, because 409999136270197 - 2¹⁹ = 409999135745909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409999136270497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204999568135098 + 204999568135099.

It is an arithmetic number, because the mean of its divisors is an integer number (204999568135099).

Almost surely, 2^{409999136270197} is an apocalyptic number.

It is an amenable number.

409999136270197 is a deficient number, since it is larger than the sum of its proper divisors (1).

409999136270197 is an equidigital number, since it uses as much as digits as its factorization.

409999136270197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 416649744, while the sum is 76.

The spelling of 409999136270197 in words is "four hundred nine trillion, nine hundred ninety-nine billion, one hundred thirty-six million, two hundred seventy thousand, one hundred ninety-seven".