12388249 has 4 divisors (see below), whose sum is σ = 12815460. Its totient is φ = 11961040.

The previous prime is 12388241. The next prime is 12388253. The reversal of 12388249 is 94288321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94288321 = 37 ⋅2548333.

It can be written as a sum of positive squares in 2 ways, for example, as 2975625 + 9412624 = 1725^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 12388249 - 2³ = 12388241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12388241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213562 + ... + 213619.

It is an arithmetic number, because the mean of its divisors is an integer number (3203865).

Almost surely, 2^12388249 is an apocalyptic number.

It is an amenable number.

12388249 is a deficient number, since it is larger than the sum of its proper divisors (427211).

12388249 is an equidigital number, since it uses as much as digits as its factorization.

12388249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427210.

The product of its digits is 27648, while the sum is 37.

The square root of 12388249 is about 3519.6944469655. The cubic root of 12388249 is about 231.3857674627.

The spelling of 12388249 in words is "twelve million, three hundred eighty-eight thousand, two hundred forty-nine".