9739989 has 48 divisors (see below), whose sum is σ = 17305600. Its totient is φ = 5155488.

The previous prime is 9739979. The next prime is 9740009. The reversal of 9739989 is 9899379.

It is a happy number.

It is not a de Polignac number, because 9739989 - 2¹¹ = 9737941 is a prime.

It is a Duffinian number.

It is a Curzon number.

9739989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9739909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94512 + ... + 94614.

Almost surely, 2^9739989 is an apocalyptic number.

It is an amenable number.

9739989 is a deficient number, since it is larger than the sum of its proper divisors (7565611).

9739989 is a wasteful number, since it uses less digits than its factorization.

9739989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 211 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 9739989 is about 3120.8955445513. The cubic root of 9739989 is about 213.5597918046.

The spelling of 9739989 in words is "nine million, seven hundred thirty-nine thousand, nine hundred eighty-nine".