404134223 has 2 divisors, whose sum is σ = 404134224. Its totient is φ = 404134222.

The previous prime is 404134187. The next prime is 404134249. The reversal of 404134223 is 322431404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404134223 - 2¹⁰ = 404133199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404134723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202067111 + 202067112.

It is an arithmetic number, because the mean of its divisors is an integer number (202067112).

Almost surely, 2^404134223 is an apocalyptic number.

404134223 is a deficient number, since it is larger than the sum of its proper divisors (1).

404134223 is an equidigital number, since it uses as much as digits as its factorization.

404134223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404134223 is about 20103.0898868806. The cubic root of 404134223 is about 739.3360388472.

Adding to 404134223 its reverse (322431404), we get a palindrome (726565627).

The spelling of 404134223 in words is "four hundred four million, one hundred thirty-four thousand, two hundred twenty-three".