9139989 has 4 divisors (see below), whose sum is σ = 12186656. Its totient is φ = 6093324.

The previous prime is 9139987. The next prime is 9140003. The reversal of 9139989 is 9899319.

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 not a de Polignac number, because 9139989 - 2¹ = 9139987 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 (9139981) 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, 1523329 + ... + 1523334.

It is an arithmetic number, because the mean of its divisors is an integer number (3046664).

Almost surely, 2^9139989 is an apocalyptic number.

It is an amenable number.

9139989 is a deficient number, since it is larger than the sum of its proper divisors (3046667).

9139989 is a wasteful number, since it uses less digits than its factorization.

9139989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046666.

The product of its digits is 157464, while the sum is 48.

The square root of 9139989 is about 3023.2414723273. The cubic root of 9139989 is about 209.0813157024.

The spelling of 9139989 in words is "nine million, one hundred thirty-nine thousand, nine hundred eighty-nine".