12449321 has 8 divisors (see below), whose sum is σ = 13607424. Its totient is φ = 11338560.

The previous prime is 12449309. The next prime is 12449369. The reversal of 12449321 is 12394421.

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

It is a de Polignac number, because none of the positive numbers 2^k-12449321 is a prime.

It is a super-2 number, since 2×12449321² = 309971186722082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12449821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11285 + ... + 12338.

It is an arithmetic number, because the mean of its divisors is an integer number (1700928).

Almost surely, 2^12449321 is an apocalyptic number.

It is an amenable number.

12449321 is a deficient number, since it is larger than the sum of its proper divisors (1158103).

12449321 is a wasteful number, since it uses less digits than its factorization.

12449321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23671.

The product of its digits is 1728, while the sum is 26.

The square root of 12449321 is about 3528.3595338344. The cubic root of 12449321 is about 231.7653754151.

The spelling of 12449321 in words is "twelve million, four hundred forty-nine thousand, three hundred twenty-one".