443140420 has 48 divisors (see below), whose sum is σ = 998101440. Its totient is φ = 164750976.

The previous prime is 443140391. The next prime is 443140421. The reversal of 443140420 is 24041344.

It is a junction number, because it is equal to n+sod(n) for n = 443140391 and 443140400.

It is not an unprimeable number, because it can be changed into a prime (443140421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9139 + ... + 31141.

It is an arithmetic number, because the mean of its divisors is an integer number (20793780).

Almost surely, 2^443140420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 443140420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499050720).

443140420 is an abundant number, since it is smaller than the sum of its proper divisors (554961020).

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

443140420 is a wasteful number, since it uses less digits than its factorization.

443140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22084 (or 22082 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 443140420 is about 21050.9006933195. The cubic root of 443140420 is about 762.3957295383.

Adding to 443140420 its reverse (24041344), we get a palindrome (467181764).

The spelling of 443140420 in words is "four hundred forty-three million, one hundred forty thousand, four hundred twenty".