404255 has 8 divisors (see below), whose sum is σ = 488592. Its totient is φ = 321088.

The previous prime is 404251. The next prime is 404267. The reversal of 404255 is 552404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404255 - 2² = 404251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404255.

It is not an unprimeable number, because it can be changed into a prime (404251) 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, 992 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (61074).

2⁴⁰⁴²⁵⁵ is an apocalyptic number.

404255 is a deficient number, since it is larger than the sum of its proper divisors (84337).

404255 is a wasteful number, since it uses less digits than its factorization.

404255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 404255 is about 635.8105063618. The cubic root of 404255 is about 73.9409682610.

Adding to 404255 its reverse (552404), we get a palindrome (956659).

The spelling of 404255 in words is "four hundred four thousand, two hundred fifty-five".