404027863 has 2 divisors, whose sum is σ = 404027864. Its totient is φ = 404027862.

The previous prime is 404027861. The next prime is 404027927. The reversal of 404027863 is 368720404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404027863 - 2¹ = 404027861 is a prime.

Together with 404027861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404027861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202013931 + 202013932.

It is an arithmetic number, because the mean of its divisors is an integer number (202013932).

Almost surely, 2^404027863 is an apocalyptic number.

404027863 is a deficient number, since it is larger than the sum of its proper divisors (1).

404027863 is an equidigital number, since it uses as much as digits as its factorization.

404027863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 404027863 is about 20100.4443483223. Note that the first 3 decimals coincide. The cubic root of 404027863 is about 739.2711736975.

The spelling of 404027863 in words is "four hundred four million, twenty-seven thousand, eight hundred sixty-three".