404016887 has 2 divisors, whose sum is σ = 404016888. Its totient is φ = 404016886.

The previous prime is 404016869. The next prime is 404016889. The reversal of 404016887 is 788610404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404016887 - 2⁸ = 404016631 is a prime.

Together with 404016889, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404016887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404016889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202008443 + 202008444.

It is an arithmetic number, because the mean of its divisors is an integer number (202008444).

Almost surely, 2^404016887 is an apocalyptic number.

404016887 is a deficient number, since it is larger than the sum of its proper divisors (1).

404016887 is an equidigital number, since it uses as much as digits as its factorization.

404016887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 404016887 is about 20100.1713176779. The cubic root of 404016887 is about 739.2644791808.

The spelling of 404016887 in words is "four hundred four million, sixteen thousand, eight hundred eighty-seven".