12003209 has 2 divisors, whose sum is σ = 12003210. Its totient is φ = 12003208.

The previous prime is 12003197. The next prime is 12003221. The reversal of 12003209 is 90230021.

It is a balanced prime because it is at equal distance from previous prime (12003197) and next prime (12003221).

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 2393209 = 3100^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 12003209 - 2⁸ = 12002953 is a prime.

It is not a weakly prime, because it can be changed into another prime (12003239) 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 as a sum of consecutive naturals, namely, 6001604 + 6001605.

It is an arithmetic number, because the mean of its divisors is an integer number (6001605).

Almost surely, 2^12003209 is an apocalyptic number.

It is an amenable number.

12003209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003209 is an equidigital number, since it uses as much as digits as its factorization.

12003209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12003209 is about 3464.5647634299. The cubic root of 12003209 is about 228.9632544030.

The spelling of 12003209 in words is "twelve million, three thousand, two hundred nine".