12149911 has 8 divisors (see below), whose sum is σ = 13345920. Its totient is φ = 11009592.

The previous prime is 12149881. The next prime is 12149933. The reversal of 12149911 is 11994121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12149911 - 2⁷ = 12149783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12149911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149941) 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 7 ways as a sum of consecutive naturals, for example, 13465 + ... + 14338.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 2^12149911 is an apocalyptic number.

12149911 is a deficient number, since it is larger than the sum of its proper divisors (1196009).

12149911 is a wasteful number, since it uses less digits than its factorization.

12149911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27845.

The product of its digits is 648, while the sum is 28.

The square root of 12149911 is about 3485.6722450626. The cubic root of 12149911 is about 229.8922683872.

The spelling of 12149911 in words is "twelve million, one hundred forty-nine thousand, nine hundred eleven".