443140040 has 128 divisors (see below), whose sum is σ = 1238630400. Its totient is φ = 139242240.

The previous prime is 443140001. The next prime is 443140043. The reversal of 443140040 is 40041344.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 443139994 and 443140021.

It is not an unprimeable number, because it can be changed into a prime (443140043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163577 + ... + 166263.

It is an arithmetic number, because the mean of its divisors is an integer number (9676800).

Almost surely, 2^443140040 is an apocalyptic number.

443140040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 443140040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619315200).

443140040 is an abundant number, since it is smaller than the sum of its proper divisors (795490360).

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

443140040 is a wasteful number, since it uses less digits than its factorization.

443140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 443140040 is about 21050.8916675755. The cubic root of 443140040 is about 762.3955116161.

Adding to 443140040 its reverse (40041344), we get a palindrome (483181384).

The spelling of 443140040 in words is "four hundred forty-three million, one hundred forty thousand, forty".