11603939 has 2 divisors, whose sum is σ = 11603940. Its totient is φ = 11603938.

The previous prime is 11603929. The next prime is 11603947. The reversal of 11603939 is 93930611.

It is a strong prime.

It is an emirp because it is prime and its reverse (93930611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11603939 - 2⁴ = 11603923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11603929) 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 as a sum of consecutive naturals, namely, 5801969 + 5801970.

It is an arithmetic number, because the mean of its divisors is an integer number (5801970).

Almost surely, 2^11603939 is an apocalyptic number.

11603939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11603939 is an equidigital number, since it uses as much as digits as its factorization.

11603939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 11603939 is about 3406.4554892146. The cubic root of 11603939 is about 226.3958590622.

The spelling of 11603939 in words is "eleven million, six hundred three thousand, nine hundred thirty-nine".