9843112989 has 24 divisors (see below), whose sum is σ = 14583418200. Its totient is φ = 6395006592.

The previous prime is 9843112987. The next prime is 9843113017. The reversal of 9843112989 is 9892113489.

9843112989 is a `hidden beast` number, since 9 + 8 + 431 + 129 + 89 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1936880100 + 7906232889 = 44010^2 + 88917^2 .

It is not a de Polignac number, because 9843112989 - 2¹ = 9843112987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9843112987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1827 + ... + 140319.

It is an arithmetic number, because the mean of its divisors is an integer number (607642425).

Almost surely, 2^9843112989 is an apocalyptic number.

It is an amenable number.

9843112989 is a deficient number, since it is larger than the sum of its proper divisors (4740305211).

9843112989 is a wasteful number, since it uses less digits than its factorization.

9843112989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138701 (or 138698 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 9843112989 is about 99212.4638792929. The cubic root of 9843112989 is about 2143.1084901417.

The spelling of 9843112989 in words is "nine billion, eight hundred forty-three million, one hundred twelve thousand, nine hundred eighty-nine".