4021444134438 has 32 divisors (see below), whose sum is σ = 8077899858912. Its totient is φ = 1334646816000.

The previous prime is 4021444134437. The next prime is 4021444134451. The reversal of 4021444134438 is 8344314441204.

4021444134438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 4021444134438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444134437) 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, 25506208 + ... + 25663388.

It is an arithmetic number, because the mean of its divisors is an integer number (252434370591).

Almost surely, 2^{4021444134438} is an apocalyptic number.

4021444134438 is an abundant number, since it is smaller than the sum of its proper divisors (4056455724474).

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

4021444134438 is a wasteful number, since it uses less digits than its factorization.

4021444134438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175720.

The product of its (nonzero) digits is 589824, while the sum is 42.

The spelling of 4021444134438 in words is "four trillion, twenty-one billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred thirty-eight".