404401421189 has 2 divisors, whose sum is σ = 404401421190. Its totient is φ = 404401421188.

The previous prime is 404401421173. The next prime is 404401421231. The reversal of 404401421189 is 981124104404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314982480289 + 89418940900 = 561233^2 + 299030^2 .

It is a cyclic number.

It is not a de Polignac number, because 404401421189 - 2⁴ = 404401421173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404401421789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202200710594 + 202200710595.

It is an arithmetic number, because the mean of its divisors is an integer number (202200710595).

Almost surely, 2^404401421189 is an apocalyptic number.

It is an amenable number.

404401421189 is a deficient number, since it is larger than the sum of its proper divisors (1).

404401421189 is an equidigital number, since it uses as much as digits as its factorization.

404401421189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 404401421189 in words is "four hundred four billion, four hundred one million, four hundred twenty-one thousand, one hundred eighty-nine".