12149099 has 4 divisors (see below), whose sum is σ = 12157680. Its totient is φ = 12140520.

The previous prime is 12149089. The next prime is 12149107. The reversal of 12149099 is 99094121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12149099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12149009) 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 3 ways as a sum of consecutive naturals, for example, 1607 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (3039420).

Almost surely, 2^12149099 is an apocalyptic number.

12149099 is a deficient number, since it is larger than the sum of its proper divisors (8581).

12149099 is an equidigital number, since it uses as much as digits as its factorization.

12149099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 12149099 is about 3485.5557663018. Note that the first 3 decimals coincide. The cubic root of 12149099 is about 229.8871469044.

The spelling of 12149099 in words is "twelve million, one hundred forty-nine thousand, ninety-nine".