404219 has 4 divisors (see below), whose sum is σ = 414120. Its totient is φ = 394320.

The previous prime is 404213. The next prime is 404221. The reversal of 404219 is 912404.

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

It is a cyclic number.

It is not a de Polignac number, because 404219 - 2¹² = 400123 is a prime.

It is a super-2 number, since 2×404219² = 326785999922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404219.

It is not an unprimeable number, because it can be changed into a prime (404213) 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, 4889 + ... + 4970.

It is an arithmetic number, because the mean of its divisors is an integer number (103530).

2⁴⁰⁴²¹⁹ is an apocalyptic number.

404219 is a deficient number, since it is larger than the sum of its proper divisors (9901).

404219 is an equidigital number, since it uses as much as digits as its factorization.

404219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9900.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 404219 is about 635.7821954097. The cubic root of 404219 is about 73.9387733149.

The spelling of 404219 in words is "four hundred four thousand, two hundred nineteen".