11189985 has 8 divisors (see below), whose sum is σ = 17904000. Its totient is φ = 5967984.

The previous prime is 11189957. The next prime is 11189989. The reversal of 11189985 is 58998111.

11189985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11189985 - 2⁹ = 11189473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11189989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372985 + ... + 373014.

It is an arithmetic number, because the mean of its divisors is an integer number (2238000).

Almost surely, 2^11189985 is an apocalyptic number.

11189985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11189985 is a deficient number, since it is larger than the sum of its proper divisors (6714015).

11189985 is an equidigital number, since it uses as much as digits as its factorization.

11189985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746007.

The product of its digits is 25920, while the sum is 42.

The square root of 11189985 is about 3345.1434946800. The cubic root of 11189985 is about 223.6710800184.

The spelling of 11189985 in words is "eleven million, one hundred eighty-nine thousand, nine hundred eighty-five".