404450697169 has 2 divisors, whose sum is σ = 404450697170. Its totient is φ = 404450697168.

The previous prime is 404450697023. The next prime is 404450697197. The reversal of 404450697169 is 961796054404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232111968400 + 172338728769 = 481780^2 + 415137^2 .

It is a cyclic number.

It is not a de Polignac number, because 404450697169 - 2³⁵ = 370090958801 is a prime.

It is a super-2 number, since 2×404450697169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404450697199) 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, 202225348584 + 202225348585.

It is an arithmetic number, because the mean of its divisors is an integer number (202225348585).

Almost surely, 2^404450697169 is an apocalyptic number.

It is an amenable number.

404450697169 is a deficient number, since it is larger than the sum of its proper divisors (1).

404450697169 is an equidigital number, since it uses as much as digits as its factorization.

404450697169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 404450697169 in words is "four hundred four billion, four hundred fifty million, six hundred ninety-seven thousand, one hundred sixty-nine".