9007989 has 4 divisors (see below), whose sum is σ = 12010656. Its totient is φ = 6005324.

The previous prime is 9007979. The next prime is 9007991. The reversal of 9007989 is 9897009.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9007989 - 2⁷ = 9007861 is a prime.

It is a super-2 number, since 2×9007989² = 162287731648242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9007989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9007939) 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 3 ways as a sum of consecutive naturals, for example, 1501329 + ... + 1501334.

It is an arithmetic number, because the mean of its divisors is an integer number (3002664).

Almost surely, 2^9007989 is an apocalyptic number.

It is an amenable number.

9007989 is a deficient number, since it is larger than the sum of its proper divisors (3002667).

9007989 is a wasteful number, since it uses less digits than its factorization.

9007989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002666.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 9007989 is about 3001.3312046490. The cubic root of 9007989 is about 208.0699114721.

The spelling of 9007989 in words is "nine million, seven thousand, nine hundred eighty-nine".