12448691 has 4 divisors (see below), whose sum is σ = 12491472. Its totient is φ = 12405912.

The previous prime is 12448679. The next prime is 12448699. The reversal of 12448691 is 19684421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19684421 = 1303 ⋅15107.

It is a cyclic number.

It is not a de Polignac number, because 12448691 - 2¹⁰ = 12447667 is a prime.

It is a super-2 number, since 2×12448691² = 309939815226962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12448699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20951 + ... + 21536.

It is an arithmetic number, because the mean of its divisors is an integer number (3122868).

Almost surely, 2^12448691 is an apocalyptic number.

12448691 is a deficient number, since it is larger than the sum of its proper divisors (42781).

12448691 is an equidigital number, since it uses as much as digits as its factorization.

12448691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42780.

The product of its digits is 13824, while the sum is 35.

The square root of 12448691 is about 3528.2702560887. The cubic root of 12448691 is about 231.7614658404.

The spelling of 12448691 in words is "twelve million, four hundred forty-eight thousand, six hundred ninety-one".