404434169 has 2 divisors, whose sum is σ = 404434170. Its totient is φ = 404434168.

The previous prime is 404434141. The next prime is 404434181. The reversal of 404434169 is 961434404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390655225 + 13778944 = 19765^2 + 3712^2 .

It is a cyclic number.

It is not a de Polignac number, because 404434169 - 2¹⁶ = 404368633 is a prime.

It is a super-2 number, since 2×404434169² = 327133994109441122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404434769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202217084 + 202217085.

It is an arithmetic number, because the mean of its divisors is an integer number (202217085).

Almost surely, 2^404434169 is an apocalyptic number.

It is an amenable number.

404434169 is a deficient number, since it is larger than the sum of its proper divisors (1).

404434169 is an equidigital number, since it uses as much as digits as its factorization.

404434169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 404434169 is about 20110.5486996253. The cubic root of 404434169 is about 739.5189038743.

The spelling of 404434169 in words is "four hundred four million, four hundred thirty-four thousand, one hundred sixty-nine".