12906249 has 4 divisors (see below), whose sum is σ = 17208336. Its totient is φ = 8604164.

The previous prime is 12906241. The next prime is 12906253. The reversal of 12906249 is 94260921.

12906249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12906249 - 2³ = 12906241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12906241) 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, 2151039 + ... + 2151044.

It is an arithmetic number, because the mean of its divisors is an integer number (4302084).

Almost surely, 2^12906249 is an apocalyptic number.

It is an amenable number.

12906249 is a deficient number, since it is larger than the sum of its proper divisors (4302087).

12906249 is an equidigital number, since it uses as much as digits as its factorization.

12906249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302086.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 12906249 is about 3592.5268266222. The cubic root of 12906249 is about 234.5668738462.

The spelling of 12906249 in words is "twelve million, nine hundred six thousand, two hundred forty-nine".