4423543989 has 8 divisors (see below), whose sum is σ = 5978854272. Its totient is φ = 2908631520.

The previous prime is 4423543967. The next prime is 4423544003. The reversal of 4423543989 is 9893453244.

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

It is not a de Polignac number, because 4423543989 - 2³¹ = 2276060341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423543489) 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, 10099197 + ... + 10099634.

It is an arithmetic number, because the mean of its divisors is an integer number (747356784).

Almost surely, 2^4423543989 is an apocalyptic number.

It is an amenable number.

4423543989 is a deficient number, since it is larger than the sum of its proper divisors (1555310283).

4423543989 is a wasteful number, since it uses less digits than its factorization.

4423543989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20198907.

The product of its digits is 3732480, while the sum is 51.

The square root of 4423543989 is about 66509.7285289904. The cubic root of 4423543989 is about 1641.5600845965.

The spelling of 4423543989 in words is "four billion, four hundred twenty-three million, five hundred forty-three thousand, nine hundred eighty-nine".