12909219 has 8 divisors (see below), whose sum is σ = 17632272. Its totient is φ = 8396160.

The previous prime is 12909217. The next prime is 12909223. The reversal of 12909219 is 91290921.

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

It is not a de Polignac number, because 12909219 - 2¹ = 12909217 is a prime.

It is a super-2 number, since 2×12909219² = 333295870379922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12909219.

It is not an unprimeable number, because it can be changed into a prime (12909217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52354 + ... + 52599.

It is an arithmetic number, because the mean of its divisors is an integer number (2204034).

Almost surely, 2^12909219 is an apocalyptic number.

12909219 is a deficient number, since it is larger than the sum of its proper divisors (4723053).

12909219 is a wasteful number, since it uses less digits than its factorization.

12909219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104997.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 12909219 is about 3592.9401609267. The cubic root of 12909219 is about 234.5848653939.

The spelling of 12909219 in words is "twelve million, nine hundred nine thousand, two hundred nineteen".