443440138 has 16 divisors (see below), whose sum is σ = 734909760. Its totient is φ = 199604416.

The previous prime is 443440117. The next prime is 443440139. The reversal of 443440138 is 831044344.

It is not an unprimeable number, because it can be changed into a prime (443440139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282748 + ... + 284311.

It is an arithmetic number, because the mean of its divisors is an integer number (45931860).

Almost surely, 2^443440138 is an apocalyptic number.

443440138 is a deficient number, since it is larger than the sum of its proper divisors (291469622).

443440138 is a wasteful number, since it uses less digits than its factorization.

443440138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567101.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 443440138 is about 21058.0183778056. The cubic root of 443440138 is about 762.5675729061.

The spelling of 443440138 in words is "four hundred forty-three million, four hundred forty thousand, one hundred thirty-eight".