405412169 has 2 divisors, whose sum is σ = 405412170. Its totient is φ = 405412168.

The previous prime is 405412157. The next prime is 405412229. The reversal of 405412169 is 961214504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371911225 + 33500944 = 19285^2 + 5788^2 .

It is a cyclic number.

It is not a de Polignac number, because 405412169 - 2⁸ = 405411913 is a prime.

It is a super-2 number, since 2×405412169² = 328718053546569122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405412129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202706084 + 202706085.

It is an arithmetic number, because the mean of its divisors is an integer number (202706085).

Almost surely, 2^405412169 is an apocalyptic number.

It is an amenable number.

405412169 is a deficient number, since it is larger than the sum of its proper divisors (1).

405412169 is an equidigital number, since it uses as much as digits as its factorization.

405412169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 405412169 is about 20134.8496145365. The cubic root of 405412169 is about 740.1145239114.

The spelling of 405412169 in words is "four hundred five million, four hundred twelve thousand, one hundred sixty-nine".