12967209 has 48 divisors (see below), whose sum is σ = 21333312. Its totient is φ = 7838208.

The previous prime is 12967183. The next prime is 12967219. The reversal of 12967209 is 90276921.

It is not a de Polignac number, because 12967209 - 2¹³ = 12959017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12967219) 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 47 ways as a sum of consecutive naturals, for example, 177597 + ... + 177669.

It is an arithmetic number, because the mean of its divisors is an integer number (444444).

Almost surely, 2^12967209 is an apocalyptic number.

It is an amenable number.

12967209 is a deficient number, since it is larger than the sum of its proper divisors (8366103).

12967209 is an equidigital number, since it uses as much as digits as its factorization.

12967209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 12967209 is about 3601.0011108024. The cubic root of 12967209 is about 234.9356032997.

The spelling of 12967209 in words is "twelve million, nine hundred sixty-seven thousand, two hundred nine".