423004440 has 64 divisors (see below), whose sum is σ = 1312783200. Its totient is φ = 108910592.

The previous prime is 423004423. The next prime is 423004441. The reversal of 423004440 is 44400324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423004441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57297 + ... + 64256.

Almost surely, 2^423004440 is an apocalyptic number.

423004440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423004440 is an abundant number, since it is smaller than the sum of its proper divisors (889778760).

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

423004440 is a wasteful number, since it uses less digits than its factorization.

423004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121596 (or 121592 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 423004440 is about 20567.0717410136. The cubic root of 423004440 is about 750.6687013852.

Adding to 423004440 its reverse (44400324), we get a palindrome (467404764).

The spelling of 423004440 in words is "four hundred twenty-three million, four thousand, four hundred forty".