405405683 has 2 divisors, whose sum is σ = 405405684. Its totient is φ = 405405682.

The previous prime is 405405673. The next prime is 405405757. The reversal of 405405683 is 386504504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405405683 - 2⁴ = 405405667 is a prime.

It is not a weakly prime, because it can be changed into another prime (405405673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202702841 + 202702842.

It is an arithmetic number, because the mean of its divisors is an integer number (202702842).

Almost surely, 2^405405683 is an apocalyptic number.

405405683 is a deficient number, since it is larger than the sum of its proper divisors (1).

405405683 is an equidigital number, since it uses as much as digits as its factorization.

405405683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 405405683 is about 20134.6885498634. The cubic root of 405405683 is about 740.1105769747.

The spelling of 405405683 in words is "four hundred five million, four hundred five thousand, six hundred eighty-three".