12099249 has 12 divisors (see below), whose sum is σ = 17632836. Its totient is φ = 7994112.

The previous prime is 12099233. The next prime is 12099271. The reversal of 12099249 is 94299021.

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 5688225 = 2532^2 + 2385^2 .

It is not a de Polignac number, because 12099249 - 2⁴ = 12099233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12099209) 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 11 ways as a sum of consecutive naturals, for example, 4932 + ... + 6965.

It is an arithmetic number, because the mean of its divisors is an integer number (1469403).

Almost surely, 2^12099249 is an apocalyptic number.

It is an amenable number.

12099249 is a deficient number, since it is larger than the sum of its proper divisors (5533587).

12099249 is a wasteful number, since it uses less digits than its factorization.

12099249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 12013 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 12099249 is about 3478.3974758501. The cubic root of 12099249 is about 229.5722927165.

The spelling of 12099249 in words is "twelve million, ninety-nine thousand, two hundred forty-nine".