3609121 has 4 divisors (see below), whose sum is σ = 3617712. Its totient is φ = 3600532.

The previous prime is 3609103. The next prime is 3609161. The reversal of 3609121 is 1219063.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1219063 = 787 ⋅1549.

It is a cyclic number.

It is not a de Polignac number, because 3609121 - 2¹⁹ = 3084833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3609092 and 3609101.

It is not an unprimeable number, because it can be changed into a prime (3609101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3631 + ... + 4516.

It is an arithmetic number, because the mean of its divisors is an integer number (904428).

Almost surely, 2^3609121 is an apocalyptic number.

It is an amenable number.

3609121 is a deficient number, since it is larger than the sum of its proper divisors (8591).

3609121 is an equidigital number, since it uses as much as digits as its factorization.

3609121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 3609121 is about 1899.7686701280. The cubic root of 3609121 is about 153.3912126589.

The spelling of 3609121 in words is "three million, six hundred nine thousand, one hundred twenty-one".