11439749 has 2 divisors, whose sum is σ = 11439750. Its totient is φ = 11439748.

The previous prime is 11439731. The next prime is 11439751. The reversal of 11439749 is 94793411.

11439749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 4972900 = 2543^2 + 2230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11439749 is a prime.

Together with 11439751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11439719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719874 + 5719875.

It is an arithmetic number, because the mean of its divisors is an integer number (5719875).

Almost surely, 2^11439749 is an apocalyptic number.

It is an amenable number.

11439749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11439749 is an equidigital number, since it uses as much as digits as its factorization.

11439749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 11439749 is about 3382.2698000012. The cubic root of 11439749 is about 225.3229863387.

The spelling of 11439749 in words is "eleven million, four hundred thirty-nine thousand, seven hundred forty-nine".