12219647 has 8 divisors (see below), whose sum is σ = 13910400. Its totient is φ = 10625560.

The previous prime is 12219631. The next prime is 12219653. The reversal of 12219647 is 74691221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12219647 - 2⁴ = 12219631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23897 + ... + 24402.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 2^12219647 is an apocalyptic number.

12219647 is a deficient number, since it is larger than the sum of its proper divisors (1690753).

12219647 is a wasteful number, since it uses less digits than its factorization.

12219647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48333.

The product of its digits is 6048, while the sum is 32.

The square root of 12219647 is about 3495.6611677907. The cubic root of 12219647 is about 230.3312617954.

The spelling of 12219647 in words is "twelve million, two hundred nineteen thousand, six hundred forty-seven".