9965189 has 4 divisors (see below), whose sum is σ = 10731756. Its totient is φ = 9198624.

The previous prime is 9965171. The next prime is 9965191. The reversal of 9965189 is 9815699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9815699 = 131 ⋅74929.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 7745089 = 1490^2 + 2783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9965189 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 (9965089) 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, 383264 + ... + 383289.

It is an arithmetic number, because the mean of its divisors is an integer number (2682939).

Almost surely, 2^9965189 is an apocalyptic number.

It is an amenable number.

9965189 is a deficient number, since it is larger than the sum of its proper divisors (766567).

9965189 is a wasteful number, since it uses less digits than its factorization.

9965189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766566.

The product of its digits is 174960, while the sum is 47.

The square root of 9965189 is about 3156.7687593487. The cubic root of 9965189 is about 215.1931849369.

The spelling of 9965189 in words is "nine million, nine hundred sixty-five thousand, one hundred eighty-nine".