404806 has 4 divisors (see below), whose sum is σ = 607212. Its totient is φ = 202402.

The previous prime is 404783. The next prime is 404819. The reversal of 404806 is 608404.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

404806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101200 + ... + 101203.

It is an arithmetic number, because the mean of its divisors is an integer number (151803).

2⁴⁰⁴⁸⁰⁶ is an apocalyptic number.

404806 is a deficient number, since it is larger than the sum of its proper divisors (202406).

404806 is a wasteful number, since it uses less digits than its factorization.

404806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202405.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 404806 is about 636.2436640156. The cubic root of 404806 is about 73.9745468828.

The spelling of 404806 in words is "four hundred four thousand, eight hundred six".