12003749 has 8 divisors (see below), whose sum is σ = 12215928. Its totient is φ = 11793600.

The previous prime is 12003743. The next prime is 12003821. The reversal of 12003749 is 94730021.

It can be written as a sum of positive squares in 4 ways, for example, as 4264225 + 7739524 = 2065^2 + 2782^2 .

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 12003749 - 2¹² = 11999653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003743) 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, 15479 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (1526991).

Almost surely, 2^12003749 is an apocalyptic number.

It is an amenable number.

12003749 is a deficient number, since it is larger than the sum of its proper divisors (212179).

12003749 is a wasteful number, since it uses less digits than its factorization.

12003749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12003749 is about 3464.6426944203. The cubic root of 12003749 is about 228.9666878821.

The spelling of 12003749 in words is "twelve million, three thousand, seven hundred forty-nine".