12192289 has 4 divisors (see below), whose sum is σ = 12231556. Its totient is φ = 12153024.

The previous prime is 12192287. The next prime is 12192343. The reversal of 12192289 is 98229121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98229121 = 409 ⋅240169.

It can be written as a sum of positive squares in 2 ways, for example, as 5841889 + 6350400 = 2417^2 + 2520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12192289 - 2¹ = 12192287 is a prime.

It is a super-2 number, since 2×12192289² = 297303822119042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12192287) 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, 19164 + ... + 19789.

It is an arithmetic number, because the mean of its divisors is an integer number (3057889).

Almost surely, 2^12192289 is an apocalyptic number.

It is an amenable number.

12192289 is a deficient number, since it is larger than the sum of its proper divisors (39267).

12192289 is an equidigital number, since it uses as much as digits as its factorization.

12192289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39266.

The product of its digits is 5184, while the sum is 34.

The square root of 12192289 is about 3491.7458384023. The cubic root of 12192289 is about 230.1592407008.

The spelling of 12192289 in words is "twelve million, one hundred ninety-two thousand, two hundred eighty-nine".