12153209 has 8 divisors (see below), whose sum is σ = 12595968. Its totient is φ = 11713680.

The previous prime is 12153203. The next prime is 12153221. The reversal of 12153209 is 90235121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12153209 - 2²⁰ = 11104633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12153203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8879 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (1574496).

Almost surely, 2^12153209 is an apocalyptic number.

It is an amenable number.

12153209 is a deficient number, since it is larger than the sum of its proper divisors (442759).

12153209 is a wasteful number, since it uses less digits than its factorization.

12153209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12153209 is about 3486.1452924398. The cubic root of 12153209 is about 229.9130673354.

The spelling of 12153209 in words is "twelve million, one hundred fifty-three thousand, two hundred nine".