404881 has 4 divisors (see below), whose sum is σ = 410992. Its totient is φ = 398772.

The previous prime is 404851. The next prime is 404941. The reversal of 404881 is 188404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404881 - 2⁵ = 404849 is a prime.

It is a super-2 number, since 2×404881² = 327857248322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

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 3 ways as a sum of consecutive naturals, for example, 2955 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (102748).

2⁴⁰⁴⁸⁸¹ is an apocalyptic number.

It is an amenable number.

404881 is a deficient number, since it is larger than the sum of its proper divisors (6111).

404881 is an equidigital number, since it uses as much as digits as its factorization.

404881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 404881 is about 636.3026009691. The cubic root of 404881 is about 73.9791151192.

The spelling of 404881 in words is "four hundred four thousand, eight hundred eighty-one".