1804223 has 4 divisors (see below), whose sum is σ = 1808208. Its totient is φ = 1800240.

The previous prime is 1804219. The next prime is 1804249. The reversal of 1804223 is 3224081.

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 1804223 - 2² = 1804219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1804195 and 1804204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804213) 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, 1211 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (452052).

2^1804223 is an apocalyptic number.

1804223 is a deficient number, since it is larger than the sum of its proper divisors (3985).

1804223 is an equidigital number, since it uses as much as digits as its factorization.

1804223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1804223 is about 1343.2136836706. The cubic root of 1804223 is about 121.7390957575.

The spelling of 1804223 in words is "one million, eight hundred four thousand, two hundred twenty-three".