443140638 has 16 divisors (see below), whose sum is σ = 910235280. Its totient is φ = 143721216.

The previous prime is 443140627. The next prime is 443140651. The reversal of 443140638 is 836041344.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 443140599 and 443140608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997843 + ... + 998286.

It is an arithmetic number, because the mean of its divisors is an integer number (56889705).

Almost surely, 2^443140638 is an apocalyptic number.

443140638 is an abundant number, since it is smaller than the sum of its proper divisors (467094642).

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

443140638 is a wasteful number, since it uses less digits than its factorization.

443140638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996171.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 443140638 is about 21050.9058712446. The cubic root of 443140638 is about 762.3958545568.

The spelling of 443140638 in words is "four hundred forty-three million, one hundred forty thousand, six hundred thirty-eight".