404023430 has 32 divisors (see below), whose sum is σ = 752734080. Its totient is φ = 156026880.

The previous prime is 404023423. The next prime is 404023439. The reversal of 404023430 is 34320404.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404023439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34691 + ... + 44849.

It is an arithmetic number, because the mean of its divisors is an integer number (23522940).

Almost surely, 2^404023430 is an apocalyptic number.

404023430 is a deficient number, since it is larger than the sum of its proper divisors (348710650).

404023430 is a wasteful number, since it uses less digits than its factorization.

404023430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10304.

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

The square root of 404023430 is about 20100.3340768257. The cubic root of 404023430 is about 739.2684699227.

Adding to 404023430 its reverse (34320404), we get a palindrome (438343834).

The spelling of 404023430 in words is "four hundred four million, twenty-three thousand, four hundred thirty".