405841169 has 2 divisors, whose sum is σ = 405841170. Its totient is φ = 405841168.

The previous prime is 405841133. The next prime is 405841171. The reversal of 405841169 is 961148504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372026944 + 33814225 = 19288^2 + 5815^2 .

It is a cyclic number.

It is not a de Polignac number, because 405841169 - 2⁸ = 405840913 is a prime.

It is a super-2 number, since 2×405841169² = 329414108910573122, which contains 22 as substring.

Together with 405841171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405841369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202920584 + 202920585.

It is an arithmetic number, because the mean of its divisors is an integer number (202920585).

Almost surely, 2^405841169 is an apocalyptic number.

It is an amenable number.

405841169 is a deficient number, since it is larger than the sum of its proper divisors (1).

405841169 is an equidigital number, since it uses as much as digits as its factorization.

405841169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 405841169 is about 20145.4999689757. The cubic root of 405841169 is about 740.3754905906.

The spelling of 405841169 in words is "four hundred five million, eight hundred forty-one thousand, one hundred sixty-nine".