12163209 has 16 divisors (see below), whose sum is σ = 16873920. Its totient is φ = 7784000.

The previous prime is 12163181. The next prime is 12163231. The reversal of 12163209 is 90236121.

It is a cyclic number.

It is not a de Polignac number, because 12163209 - 2¹² = 12159113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12163259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21559 + ... + 22115.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^12163209 is an apocalyptic number.

It is an amenable number.

12163209 is a deficient number, since it is larger than the sum of its proper divisors (4710711).

12163209 is a wasteful number, since it uses less digits than its factorization.

12163209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 12163209 is about 3487.5792464115. The cubic root of 12163209 is about 229.9761096799.

The spelling of 12163209 in words is "twelve million, one hundred sixty-three thousand, two hundred nine".