4398943989 has 48 divisors (see below), whose sum is σ = 6810417152. Its totient is φ = 2519748000.

The previous prime is 4398943963. The next prime is 4398944003. The reversal of 4398943989 is 9893498934.

It is not a de Polignac number, because 4398943989 - 2¹⁵ = 4398911221 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 (4398943589) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 479334 + ... + 488424.

Almost surely, 2^4398943989 is an apocalyptic number.

It is an amenable number.

4398943989 is a deficient number, since it is larger than the sum of its proper divisors (2411473163).

4398943989 is a wasteful number, since it uses less digits than its factorization.

4398943989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9190 (or 9179 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 66.

The square root of 4398943989 is about 66324.5353470343. The cubic root of 4398943989 is about 1638.5114379435.

Subtracting 4398943989 from its reverse (9893498934), we obtain a palindrome (5494554945).

It can be divided in two parts, 43989 and 43989, that added together give a palindrome (87978).

The spelling of 4398943989 in words is "four billion, three hundred ninety-eight million, nine hundred forty-three thousand, nine hundred eighty-nine".