11888939 has 2 divisors, whose sum is σ = 11888940. Its totient is φ = 11888938.

The previous prime is 11888917. The next prime is 11888963. The reversal of 11888939 is 93988811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11888939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11888893 and 11888902.

It is not a weakly prime, because it can be changed into another prime (11888909) 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, 5944469 + 5944470.

It is an arithmetic number, because the mean of its divisors is an integer number (5944470).

Almost surely, 2^11888939 is an apocalyptic number.

11888939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11888939 is an equidigital number, since it uses as much as digits as its factorization.

11888939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 47.

The square root of 11888939 is about 3448.0340775578. The cubic root of 11888939 is about 228.2343632506.

The spelling of 11888939 in words is "eleven million, eight hundred eighty-eight thousand, nine hundred thirty-nine".