12149444 has 24 divisors (see below), whose sum is σ = 21724248. Its totient is φ = 5944320.

The previous prime is 12149443. The next prime is 12149447. The reversal of 12149444 is 44494121.

It can be written as a sum of positive squares in 4 ways, for example, as 846400 + 11303044 = 920^2 + 3362^2 .

It is not an unprimeable number, because it can be changed into a prime (12149443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67034 + ... + 67214.

It is an arithmetic number, because the mean of its divisors is an integer number (905177).

Almost surely, 2^12149444 is an apocalyptic number.

It is an amenable number.

12149444 is a deficient number, since it is larger than the sum of its proper divisors (9574804).

12149444 is a wasteful number, since it uses less digits than its factorization.

12149444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 453 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 12149444 is about 3485.6052559061. The cubic root of 12149444 is about 229.8893229317.

The spelling of 12149444 in words is "twelve million, one hundred forty-nine thousand, four hundred forty-four".