9137989 has 4 divisors (see below), whose sum is σ = 10443424. Its totient is φ = 7832556.

The previous prime is 9137981. The next prime is 9138007. The reversal of 9137989 is 9897319.

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 9137989 - 2³ = 9137981 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 (9137981) 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, 652707 + ... + 652720.

It is an arithmetic number, because the mean of its divisors is an integer number (2610856).

Almost surely, 2^9137989 is an apocalyptic number.

It is an amenable number.

9137989 is a deficient number, since it is larger than the sum of its proper divisors (1305435).

9137989 is a wasteful number, since it uses less digits than its factorization.

9137989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305434.

The product of its digits is 122472, while the sum is 46.

The square root of 9137989 is about 3022.9106834308. The cubic root of 9137989 is about 209.0660642932.

The spelling of 9137989 in words is "nine million, one hundred thirty-seven thousand, nine hundred eighty-nine".