11998449 has 20 divisors (see below), whose sum is σ = 18051264. Its totient is φ = 7942104.

The previous prime is 11998439. The next prime is 11998487. The reversal of 11998449 is 94489911.

11998449 is a `hidden beast` number, since 119 + 98 + 449 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11998449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11998439) 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 19 ways as a sum of consecutive naturals, for example, 13084 + ... + 13970.

Almost surely, 2^11998449 is an apocalyptic number.

It is an amenable number.

11998449 is a deficient number, since it is larger than the sum of its proper divisors (6052815).

11998449 is an equidigital number, since it uses as much as digits as its factorization.

11998449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1057 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 11998449 is about 3463.8777403367. The cubic root of 11998449 is about 228.9329844646.

The spelling of 11998449 in words is "eleven million, nine hundred ninety-eight thousand, four hundred forty-nine".