9003989 has 4 divisors (see below), whose sum is σ = 9017856. Its totient is φ = 8990124.

The previous prime is 9003977. The next prime is 9003997. The reversal of 9003989 is 9893009.

9003989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-9003989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9003959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5909 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (2254464).

Almost surely, 2^9003989 is an apocalyptic number.

It is an amenable number.

9003989 is a deficient number, since it is larger than the sum of its proper divisors (13867).

9003989 is a wasteful number, since it uses less digits than its factorization.

9003989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 9003989 is about 3000.6647596824. The cubic root of 9003989 is about 208.0391090785.

The spelling of 9003989 in words is "nine million, three thousand, nine hundred eighty-nine".