409459398497189 has 2 divisors, whose sum is σ = 409459398497190. Its totient is φ = 409459398497188.

The previous prime is 409459398496997. The next prime is 409459398497249. The reversal of 409459398497189 is 981794893954904.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235476175824289 + 173983222672900 = 15345233^2 + 13190270^2 .

It is a cyclic number.

It is not a de Polignac number, because 409459398497189 - 2¹⁶ = 409459398431653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409459398497389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204729699248594 + 204729699248595.

It is an arithmetic number, because the mean of its divisors is an integer number (204729699248595).

Almost surely, 2^{409459398497189} is an apocalyptic number.

It is an amenable number.

409459398497189 is a deficient number, since it is larger than the sum of its proper divisors (1).

409459398497189 is an equidigital number, since it uses as much as digits as its factorization.

409459398497189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25395793920, while the sum is 89.

The spelling of 409459398497189 in words is "four hundred nine trillion, four hundred fifty-nine billion, three hundred ninety-eight million, four hundred ninety-seven thousand, one hundred eighty-nine".