12882289 has 4 divisors (see below), whose sum is σ = 14722624. Its totient is φ = 11041956.

The previous prime is 12882283. The next prime is 12882299. The reversal of 12882289 is 98228821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98228821 = 37 ⋅2654833.

It is a cyclic number.

It is not a de Polignac number, because 12882289 - 2⁷ = 12882161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12882283) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920157 + ... + 920170.

It is an arithmetic number, because the mean of its divisors is an integer number (3680656).

Almost surely, 2^12882289 is an apocalyptic number.

It is an amenable number.

12882289 is a deficient number, since it is larger than the sum of its proper divisors (1840335).

12882289 is an equidigital number, since it uses as much as digits as its factorization.

12882289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840334.

The product of its digits is 36864, while the sum is 40.

The square root of 12882289 is about 3589.1905772750. The cubic root of 12882289 is about 234.4216288618.

The spelling of 12882289 in words is "twelve million, eight hundred eighty-two thousand, two hundred eighty-nine".