9189913 has 4 divisors (see below), whose sum is σ = 9240868. Its totient is φ = 9138960.

The previous prime is 9189893. The next prime is 9189923. The reversal of 9189913 is 3199819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3199819 = 7 ⋅457117.

It can be written as a sum of positive squares in 2 ways, for example, as 2778889 + 6411024 = 1667^2 + 2532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9189913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9189923) 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, 25206 + ... + 25567.

It is an arithmetic number, because the mean of its divisors is an integer number (2310217).

Almost surely, 2^9189913 is an apocalyptic number.

It is an amenable number.

9189913 is a deficient number, since it is larger than the sum of its proper divisors (50955).

9189913 is a wasteful number, since it uses less digits than its factorization.

9189913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50954.

The product of its digits is 17496, while the sum is 40.

The square root of 9189913 is about 3031.4869288849. The cubic root of 9189913 is about 209.4613025967.

The spelling of 9189913 in words is "nine million, one hundred eighty-nine thousand, nine hundred thirteen".