12089749 has 16 divisors (see below), whose sum is σ = 14279040. Its totient is φ = 10022400.

The previous prime is 12089747. The next prime is 12089761. The reversal of 12089749 is 94798021.

It is a cyclic number.

It is not a de Polignac number, because 12089749 - 2¹ = 12089747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12089741) 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 in 15 ways as a sum of consecutive naturals, for example, 29949 + ... + 30349.

It is an arithmetic number, because the mean of its divisors is an integer number (892440).

Almost surely, 2^12089749 is an apocalyptic number.

It is an amenable number.

12089749 is a deficient number, since it is larger than the sum of its proper divisors (2189291).

12089749 is an equidigital number, since it uses as much as digits as its factorization.

12089749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 12089749 is about 3477.0316363243. The cubic root of 12089749 is about 229.5121923518.

The spelling of 12089749 in words is "twelve million, eighty-nine thousand, seven hundred forty-nine".