404421502144189 has 2 divisors, whose sum is σ = 404421502144190. Its totient is φ = 404421502144188.

The previous prime is 404421502144171. The next prime is 404421502144243. The reversal of 404421502144189 is 981441205124404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397535128988089 + 6886373156100 = 19938283^2 + 2624190^2 .

It is a cyclic number.

It is not a de Polignac number, because 404421502144189 - 2⁹ = 404421502143677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404421502144129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202210751072094 + 202210751072095.

It is an arithmetic number, because the mean of its divisors is an integer number (202210751072095).

Almost surely, 2^{404421502144189} is an apocalyptic number.

It is an amenable number.

404421502144189 is a deficient number, since it is larger than the sum of its proper divisors (1).

404421502144189 is an equidigital number, since it uses as much as digits as its factorization.

404421502144189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 404421502144189 in words is "four hundred four trillion, four hundred twenty-one billion, five hundred two million, one hundred forty-four thousand, one hundred eighty-nine".