409307334143891 has 2 divisors, whose sum is σ = 409307334143892. Its totient is φ = 409307334143890.

The previous prime is 409307334143867. The next prime is 409307334143921. The reversal of 409307334143891 is 198341433703904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409307334143891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409307334143891.

It is not a weakly prime, because it can be changed into another prime (409307334142891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204653667071945 + 204653667071946.

It is an arithmetic number, because the mean of its divisors is an integer number (204653667071946).

Almost surely, 2^{409307334143891} is an apocalyptic number.

409307334143891 is a deficient number, since it is larger than the sum of its proper divisors (1).

409307334143891 is an equidigital number, since it uses as much as digits as its factorization.

409307334143891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 59.

The spelling of 409307334143891 in words is "four hundred nine trillion, three hundred seven billion, three hundred thirty-four million, one hundred forty-three thousand, eight hundred ninety-one".