11205983 has 4 divisors (see below), whose sum is σ = 11216280. Its totient is φ = 11195688.

The previous prime is 11205979. The next prime is 11206021. The reversal of 11205983 is 38950211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 38950211 = 5479 ⋅7109.

It is a cyclic number.

It is not a de Polignac number, because 11205983 - 2² = 11205979 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11207983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3293 + ... + 5766.

It is an arithmetic number, because the mean of its divisors is an integer number (2804070).

Almost surely, 2^11205983 is an apocalyptic number.

11205983 is a deficient number, since it is larger than the sum of its proper divisors (10297).

11205983 is an equidigital number, since it uses as much as digits as its factorization.

11205983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 11205983 is about 3347.5338683873. The cubic root of 11205983 is about 223.7776213001. Note that the first 3 decimals are identical.

The spelling of 11205983 in words is "eleven million, two hundred five thousand, nine hundred eighty-three".