12320449 has 2 divisors, whose sum is σ = 12320450. Its totient is φ = 12320448.

The previous prime is 12320443. The next prime is 12320471. The reversal of 12320449 is 94402321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11730625 + 589824 = 3425^2 + 768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320449 is a prime.

It is not a weakly prime, because it can be changed into another prime (12320443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160224 + 6160225.

It is an arithmetic number, because the mean of its divisors is an integer number (6160225).

Almost surely, 2^12320449 is an apocalyptic number.

It is an amenable number.

12320449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320449 is an equidigital number, since it uses as much as digits as its factorization.

12320449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12320449 is about 3510.0497147476. The cubic root of 12320449 is about 230.9628757891.

It can be divided in two parts, 12320 and 449, that added together give a square (12769 = 113²).

The spelling of 12320449 in words is "twelve million, three hundred twenty thousand, four hundred forty-nine".