12375209 has 16 divisors (see below), whose sum is σ = 15534720. Its totient is φ = 9576960.

The previous prime is 12375203. The next prime is 12375221. The reversal of 12375209 is 90257321.

It is a cyclic number.

It is not a de Polignac number, because 12375209 - 2¹² = 12371113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12375203) 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 15 ways as a sum of consecutive naturals, for example, 12857 + ... + 13785.

It is an arithmetic number, because the mean of its divisors is an integer number (970920).

Almost surely, 2^12375209 is an apocalyptic number.

It is an amenable number.

12375209 is a deficient number, since it is larger than the sum of its proper divisors (3159511).

12375209 is a wasteful number, since it uses less digits than its factorization.

12375209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 12375209 is about 3517.8415257086. The cubic root of 12375209 is about 231.3045526034.

It can be divided in two parts, 1237 and 5209, that added together give a palindrome (6446).

The spelling of 12375209 in words is "twelve million, three hundred seventy-five thousand, two hundred nine".