11111983 has 2 divisors, whose sum is σ = 11111984. Its totient is φ = 11111982.

The previous prime is 11111977. The next prime is 11111993. The reversal of 11111983 is 38911111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111923) 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, 5555991 + 5555992.

It is an arithmetic number, because the mean of its divisors is an integer number (5555992).

Almost surely, 2^11111983 is an apocalyptic number.

11111983 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111983 is an equidigital number, since it uses as much as digits as its factorization.

11111983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 25.

The square root of 11111983 is about 3333.4641141011. The cubic root of 11111983 is about 223.1501532529.

The spelling of 11111983 in words is "eleven million, one hundred eleven thousand, nine hundred eighty-three".