12009356 has 12 divisors (see below), whose sum is σ = 21042168. Its totient is φ = 5997312.

The previous prime is 12009337. The next prime is 12009367. The reversal of 12009356 is 65390021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3635 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (1753514).

Almost surely, 2^12009356 is an apocalyptic number.

It is an amenable number.

12009356 is a deficient number, since it is larger than the sum of its proper divisors (9032812).

12009356 is a wasteful number, since it uses less digits than its factorization.

12009356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688 (or 3686 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 12009356 is about 3465.4517743001. The cubic root of 12009356 is about 229.0023327566.

Adding to 12009356 its reverse (65390021), we get a palindrome (77399377).

The spelling of 12009356 in words is "twelve million, nine thousand, three hundred fifty-six".