423544404 has 12 divisors (see below), whose sum is σ = 988270304. Its totient is φ = 141181464.

The previous prime is 423544403. The next prime is 423544441. The reversal of 423544404 is 404445324.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423544403) 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, 17647672 + ... + 17647695.

Almost surely, 2^423544404 is an apocalyptic number.

It is an amenable number.

423544404 is an abundant number, since it is smaller than the sum of its proper divisors (564725900).

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

423544404 is a wasteful number, since it uses less digits than its factorization.

423544404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35295374 (or 35295372 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

The square root of 423544404 is about 20580.1944597227. The cubic root of 423544404 is about 750.9879744150.

Adding to 423544404 its reverse (404445324), we get a palindrome (827989728).

The spelling of 423544404 in words is "four hundred twenty-three million, five hundred forty-four thousand, four hundred four".