9391161 has 12 divisors (see below), whose sum is σ = 13559568. Its totient is φ = 5778864.

The previous prime is 9391147. The next prime is 9391169. The reversal of 9391161 is 1611939.

9391161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9391161 - 2⁶ = 9391097 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is the 3065-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (9391169) by changing a digit.

It is a nontrivial repunit in base 3064.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8755 + ... + 9768.

It is an arithmetic number, because the mean of its divisors is an integer number (1129964).

Almost surely, 2^9391161 is an apocalyptic number.

It is an amenable number.

9391161 is a deficient number, since it is larger than the sum of its proper divisors (4168407).

9391161 is a wasteful number, since it uses less digits than its factorization.

9391161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18552 (or 18539 counting only the distinct ones).

The product of its digits is 1458, while the sum is 30.

The square root of 9391161 is about 3064.5001223691. The cubic root of 9391161 is about 210.9792586846.

It can be divided in two parts, 9 and 391161, that added together give a triangular number (391170 = T₈₈₄).

The spelling of 9391161 in words is "nine million, three hundred ninety-one thousand, one hundred sixty-one".