223400404 has 12 divisors (see below), whose sum is σ = 411527200. Its totient is φ = 105821208.

The previous prime is 223400389. The next prime is 223400407. The reversal of 223400404 is 404004322.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223400407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469664 + ... + 1469815.

Almost surely, 2^223400404 is an apocalyptic number.

It is an amenable number.

223400404 is a deficient number, since it is larger than the sum of its proper divisors (188126796).

223400404 is a wasteful number, since it uses less digits than its factorization.

223400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939502 (or 2939500 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 223400404 is about 14946.5850280256. The cubic root of 223400404 is about 606.7754272396.

Adding to 223400404 its reverse (404004322), we get a palindrome (627404726).

The spelling of 223400404 in words is "two hundred twenty-three million, four hundred thousand, four hundred four".