4021444543 has 8 divisors (see below), whose sum is σ = 4090780800. Its totient is φ = 3952147608.

The previous prime is 4021444541. The next prime is 4021444549. The reversal of 4021444543 is 3454441204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4021444543 - 2¹ = 4021444541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444541) 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, 259080 + ... + 274162.

It is an arithmetic number, because the mean of its divisors is an integer number (511347600).

Almost surely, 2^4021444543 is an apocalyptic number.

4021444543 is a deficient number, since it is larger than the sum of its proper divisors (69336257).

4021444543 is a wasteful number, since it uses less digits than its factorization.

4021444543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19661.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 4021444543 is about 63414.8605848818. The cubic root of 4021444543 is about 1590.2327551090.

Adding to 4021444543 its reverse (3454441204), we get a palindrome (7475885747).

The spelling of 4021444543 in words is "four billion, twenty-one million, four hundred forty-four thousand, five hundred forty-three".