404220233 has 4 divisors (see below), whose sum is σ = 404709840. Its totient is φ = 403730628.

The previous prime is 404220211. The next prime is 404220247. The reversal of 404220233 is 332022404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404220233 - 2¹⁰ = 404219209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404220293) 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, 243563 + ... + 245216.

It is an arithmetic number, because the mean of its divisors is an integer number (101177460).

Almost surely, 2^404220233 is an apocalyptic number.

It is an amenable number.

404220233 is a deficient number, since it is larger than the sum of its proper divisors (489607).

404220233 is an equidigital number, since it uses as much as digits as its factorization.

404220233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489606.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 404220233 is about 20105.2289964576. The cubic root of 404220233 is about 739.3884849392.

Adding to 404220233 its reverse (332022404), we get a palindrome (736242637).

The spelling of 404220233 in words is "four hundred four million, two hundred twenty thousand, two hundred thirty-three".