12906889 has 4 divisors (see below), whose sum is σ = 12955140. Its totient is φ = 12858640.

The previous prime is 12906863. The next prime is 12906937. The reversal of 12906889 is 98860921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98860921 = 101 ⋅978821.

It can be written as a sum of positive squares in 2 ways, for example, as 1904400 + 11002489 = 1380^2 + 3317^2 .

It is a cyclic number.

It is not a de Polignac number, because 12906889 - 2⁵ = 12906857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12906589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23722 + ... + 24259.

It is an arithmetic number, because the mean of its divisors is an integer number (3238785).

Almost surely, 2^12906889 is an apocalyptic number.

It is an amenable number.

12906889 is a deficient number, since it is larger than the sum of its proper divisors (48251).

12906889 is an equidigital number, since it uses as much as digits as its factorization.

12906889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48250.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 12906889 is about 3592.6158993135. The cubic root of 12906889 is about 234.5707510460.

The spelling of 12906889 in words is "twelve million, nine hundred six thousand, eight hundred eighty-nine".