405069317 has 2 divisors, whose sum is σ = 405069318. Its totient is φ = 405069316.

The previous prime is 405069311. The next prime is 405069347. The reversal of 405069317 is 713960504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381264676 + 23804641 = 19526^2 + 4879^2 .

It is a cyclic number.

It is not a de Polignac number, because 405069317 - 2⁸ = 405069061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405069311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202534658 + 202534659.

It is an arithmetic number, because the mean of its divisors is an integer number (202534659).

Almost surely, 2^405069317 is an apocalyptic number.

It is an amenable number.

405069317 is a deficient number, since it is larger than the sum of its proper divisors (1).

405069317 is an equidigital number, since it uses as much as digits as its factorization.

405069317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 405069317 is about 20126.3339185257. Note that the first 3 decimals coincide. The cubic root of 405069317 is about 739.9058298721.

The spelling of 405069317 in words is "four hundred five million, sixty-nine thousand, three hundred seventeen".