11808749 has 2 divisors, whose sum is σ = 11808750. Its totient is φ = 11808748.

The previous prime is 11808743. The next prime is 11808781. The reversal of 11808749 is 94780811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 126025 = 3418^2 + 355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11808749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11808743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5904374 + 5904375.

It is an arithmetic number, because the mean of its divisors is an integer number (5904375).

Almost surely, 2^11808749 is an apocalyptic number.

It is an amenable number.

11808749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11808749 is an equidigital number, since it uses as much as digits as its factorization.

11808749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 11808749 is about 3436.3860376855. The cubic root of 11808749 is about 227.7200639995.

The spelling of 11808749 in words is "eleven million, eight hundred eight thousand, seven hundred forty-nine".