404855 has 16 divisors (see below), whose sum is σ = 562464. Its totient is φ = 276480.

The previous prime is 404851. The next prime is 404941. The reversal of 404855 is 558404.

It is not a de Polignac number, because 404855 - 2² = 404851 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2⁴⁰⁴⁸⁵⁵ is an apocalyptic number.

404855 is a deficient number, since it is larger than the sum of its proper divisors (157609).

404855 is a wasteful number, since it uses less digits than its factorization.

404855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 404855 is about 636.2821701101. The cubic root of 404855 is about 73.9775315278.

The spelling of 404855 in words is "four hundred four thousand, eight hundred fifty-five".