404506 has 8 divisors (see below), whose sum is σ = 621684. Its totient is φ = 197280.

The previous prime is 404497. The next prime is 404507. The reversal of 404506 is 605404.

It can be written as a sum of positive squares in 2 ways, for example, as 349281 + 55225 = 591^2 + 235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (404507) 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, 2385 + ... + 2548.

2⁴⁰⁴⁵⁰⁶ is an apocalyptic number.

404506 is a deficient number, since it is larger than the sum of its proper divisors (217178).

404506 is a wasteful number, since it uses less digits than its factorization.

404506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 404506 is about 636.0078615866. The cubic root of 404506 is about 73.9562682930.

The spelling of 404506 in words is "four hundred four thousand, five hundred six".