12090249 has 16 divisors (see below), whose sum is σ = 18691200. Its totient is φ = 7709328.

The previous prime is 12090241. The next prime is 12090259. The reversal of 12090249 is 94209021.

It is not a de Polignac number, because 12090249 - 2³ = 12090241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12090241) 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, 9114 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (1168200).

Almost surely, 2^12090249 is an apocalyptic number.

It is an amenable number.

12090249 is a deficient number, since it is larger than the sum of its proper divisors (6600951).

12090249 is a wasteful number, since it uses less digits than its factorization.

12090249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19501 (or 19495 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12090249 is about 3477.1035359908. The cubic root of 12090249 is about 229.5153563136.

The spelling of 12090249 in words is "twelve million, ninety thousand, two hundred forty-nine".