12651449 has 4 divisors (see below), whose sum is σ = 13201536. Its totient is φ = 12101364.

The previous prime is 12651437. The next prime is 12651467. The reversal of 12651449 is 94415621.

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 12651449 - 2⁴ = 12651433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651469) 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, 275009 + ... + 275054.

It is an arithmetic number, because the mean of its divisors is an integer number (3300384).

Almost surely, 2^12651449 is an apocalyptic number.

It is an amenable number.

12651449 is a deficient number, since it is larger than the sum of its proper divisors (550087).

12651449 is an equidigital number, since it uses as much as digits as its factorization.

12651449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550086.

The product of its digits is 8640, while the sum is 32.

The square root of 12651449 is about 3556.8875439069. The cubic root of 12651449 is about 233.0129669145.

The spelling of 12651449 in words is "twelve million, six hundred fifty-one thousand, four hundred forty-nine".