405863 has 2 divisors, whose sum is σ = 405864. Its totient is φ = 405862.

The previous prime is 405857. The next prime is 405869. The reversal of 405863 is 368504.

It is a balanced prime because it is at equal distance from previous prime (405857) and next prime (405869).

It is a cyclic number.

It is not a de Polignac number, because 405863 - 2⁶ = 405799 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 (405869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202931 + 202932.

It is an arithmetic number, because the mean of its divisors is an integer number (202932).

2⁴⁰⁵⁸⁶³ is an apocalyptic number.

405863 is a deficient number, since it is larger than the sum of its proper divisors (1).

405863 is an equidigital number, since it uses as much as digits as its factorization.

405863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 405863 is about 637.0737790868. The cubic root of 405863 is about 74.0388765774.

The spelling of 405863 in words is "four hundred five thousand, eight hundred sixty-three".