3612209 has 2 divisors, whose sum is σ = 3612210. Its totient is φ = 3612208.

The previous prime is 3612197. The next prime is 3612221. The reversal of 3612209 is 9022163.

It is a balanced prime because it is at equal distance from previous prime (3612197) and next prime (3612221).

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 2209 = 1900^2 + 47^2 .

It is an emirp because it is prime and its reverse (9022163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3612209 - 2²⁰ = 2563633 is a prime.

It is a super-3 number, since 3×3612209³ (a number of 21 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3612239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806104 + 1806105.

It is an arithmetic number, because the mean of its divisors is an integer number (1806105).

Almost surely, 2^3612209 is an apocalyptic number.

It is an amenable number.

3612209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3612209 is an equidigital number, since it uses as much as digits as its factorization.

3612209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3612209 is about 1900.5812268882. The cubic root of 3612209 is about 153.4349478727.

It can be divided in two parts, 361 and 2209, that multiplied together give a square (797449 = 893²).

The spelling of 3612209 in words is "three million, six hundred twelve thousand, two hundred nine".