404858 has 16 divisors (see below), whose sum is σ = 639360. Its totient is φ = 192096.

The previous prime is 404851. The next prime is 404941. The reversal of 404858 is 858404.

It is an Ulam number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 404858.

It is not an unprimeable number, because it can be changed into a prime (404851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5510 + ... + 5582.

It is an arithmetic number, because the mean of its divisors is an integer number (39960).

2⁴⁰⁴⁸⁵⁸ is an apocalyptic number.

404858 is a deficient number, since it is larger than the sum of its proper divisors (234502).

404858 is a wasteful number, since it uses less digits than its factorization.

404858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 404858 is about 636.2845275504. The cubic root of 404858 is about 73.9777142533.

The spelling of 404858 in words is "four hundred four thousand, eight hundred fifty-eight".