12448109 has 4 divisors (see below), whose sum is σ = 12605760. Its totient is φ = 12290460.

The previous prime is 12448099. The next prime is 12448151. The reversal of 12448109 is 90184421.

12448109 = 2036² + 2037² + 2038².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90184421 = 281 ⋅320941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12448109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12448609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78707 + ... + 78864.

It is an arithmetic number, because the mean of its divisors is an integer number (3151440).

Almost surely, 2^12448109 is an apocalyptic number.

It is an amenable number.

12448109 is a deficient number, since it is larger than the sum of its proper divisors (157651).

12448109 is an equidigital number, since it uses as much as digits as its factorization.

12448109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157650.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 12448109 is about 3528.1877784494. The cubic root of 12448109 is about 231.7578540209.

The spelling of 12448109 in words is "twelve million, four hundred forty-eight thousand, one hundred nine".