409909843229 has 2 divisors, whose sum is σ = 409909843230. Its totient is φ = 409909843228.

The previous prime is 409909843219. The next prime is 409909843237. The reversal of 409909843229 is 922348909904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409900855225 + 8988004 = 640235^2 + 2998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409909843229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409909843219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204954921614 + 204954921615.

It is an arithmetic number, because the mean of its divisors is an integer number (204954921615).

Almost surely, 2^409909843229 is an apocalyptic number.

It is an amenable number.

409909843229 is a deficient number, since it is larger than the sum of its proper divisors (1).

409909843229 is an equidigital number, since it uses as much as digits as its factorization.

409909843229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 409909843229 in words is "four hundred nine billion, nine hundred nine million, eight hundred forty-three thousand, two hundred twenty-nine".