12892289 has 4 divisors (see below), whose sum is σ = 13103700. Its totient is φ = 12680880.

The previous prime is 12892261. The next prime is 12892291. The reversal of 12892289 is 98229821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98229821 = 5443 ⋅18047.

It can be written as a sum of positive squares in 2 ways, for example, as 6210064 + 6682225 = 2492^2 + 2585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12892289 is a prime.

It is a super-2 number, since 2×12892289² = 332422231319042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12892219) 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, 105614 + ... + 105735.

It is an arithmetic number, because the mean of its divisors is an integer number (3275925).

Almost surely, 2^12892289 is an apocalyptic number.

It is an amenable number.

12892289 is a deficient number, since it is larger than the sum of its proper divisors (211411).

12892289 is an equidigital number, since it uses as much as digits as its factorization.

12892289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211410.

The product of its digits is 41472, while the sum is 41.

The square root of 12892289 is about 3590.5833787840. The cubic root of 12892289 is about 234.4822705169.

The spelling of 12892289 in words is "twelve million, eight hundred ninety-two thousand, two hundred eighty-nine".