12723449 has 8 divisors (see below), whose sum is σ = 13118208. Its totient is φ = 12331440.

The previous prime is 12723443. The next prime is 12723457. The reversal of 12723449 is 94432721.

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

It is a cyclic number.

It is not a de Polignac number, because 12723449 - 2⁴ = 12723433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12723443) 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 7 ways as a sum of consecutive naturals, for example, 12344 + ... + 13334.

It is an arithmetic number, because the mean of its divisors is an integer number (1639776).

Almost surely, 2^12723449 is an apocalyptic number.

It is an amenable number.

12723449 is a deficient number, since it is larger than the sum of its proper divisors (394759).

12723449 is an equidigital number, since it uses as much as digits as its factorization.

12723449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375.

The product of its digits is 12096, while the sum is 32.

The square root of 12723449 is about 3566.9943930430. The cubic root of 12723449 is about 233.4541603239.

The spelling of 12723449 in words is "twelve million, seven hundred twenty-three thousand, four hundred forty-nine".