11803949 has 2 divisors, whose sum is σ = 11803950. Its totient is φ = 11803948.

The previous prime is 11803931. The next prime is 11803951. The reversal of 11803949 is 94930811.

11803949 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., 11437924 + 366025 = 3382^2 + 605^2 .

It is an emirp because it is prime and its reverse (94930811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11803949 is a prime.

Together with 11803951, 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 (11803969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5901974 + 5901975.

It is an arithmetic number, because the mean of its divisors is an integer number (5901975).

Almost surely, 2^11803949 is an apocalyptic number.

It is an amenable number.

11803949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11803949 is an equidigital number, since it uses as much as digits as its factorization.

11803949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 11803949 is about 3435.6875585536. The cubic root of 11803949 is about 227.6892053979.

The spelling of 11803949 in words is "eleven million, eight hundred three thousand, nine hundred forty-nine".