404355 has 16 divisors (see below), whose sum is σ = 739584. Its totient is φ = 184800.

The previous prime is 404323. The next prime is 404357. The reversal of 404355 is 553404.

It is a happy number.

It is not a de Polignac number, because 404355 - 2⁵ = 404323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404357) 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, 1821 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (46224).

2⁴⁰⁴³⁵⁵ is an apocalyptic number.

404355 is a deficient number, since it is larger than the sum of its proper divisors (335229).

404355 is a wasteful number, since it uses less digits than its factorization.

404355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 404355 is about 635.8891412817. The cubic root of 404355 is about 73.9470646500.

Adding to 404355 its reverse (553404), we get a palindrome (957759).

The spelling of 404355 in words is "four hundred four thousand, three hundred fifty-five".