423440604 has 18 divisors (see below), whose sum is σ = 1070363840. Its totient is φ = 141146856.

The previous prime is 423440569. The next prime is 423440609. The reversal of 423440604 is 406044324.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423440609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5881084 + ... + 5881155.

Almost surely, 2^423440604 is an apocalyptic number.

It is an amenable number.

423440604 is an abundant number, since it is smaller than the sum of its proper divisors (646923236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423440604 is a wasteful number, since it uses less digits than its factorization.

423440604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762249 (or 11762244 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 423440604 is about 20577.6724631334. The cubic root of 423440604 is about 750.9266200290.

Adding to 423440604 its reverse (406044324), we get a palindrome (829484928).

The spelling of 423440604 in words is "four hundred twenty-three million, four hundred forty thousand, six hundred four".