9131789 has 4 divisors (see below), whose sum is σ = 9256956. Its totient is φ = 9006624.

The previous prime is 9131783. The next prime is 9131791. The reversal of 9131789 is 9871319.

9131789 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 an emirpimes, since its reverse is a distinct semiprime: 9871319 = 2689 ⋅3671.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 1525225 = 2758^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 9131789 - 2¹² = 9127693 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 (9131783) 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, 62474 + ... + 62619.

It is an arithmetic number, because the mean of its divisors is an integer number (2314239).

Almost surely, 2^9131789 is an apocalyptic number.

It is an amenable number.

9131789 is a deficient number, since it is larger than the sum of its proper divisors (125167).

9131789 is a wasteful number, since it uses less digits than its factorization.

9131789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125166.

The product of its digits is 13608, while the sum is 38.

The square root of 9131789 is about 3021.8850077394. The cubic root of 9131789 is about 209.0187707781.

The spelling of 9131789 in words is "nine million, one hundred thirty-one thousand, seven hundred eighty-nine".