11789985 has 16 divisors (see below), whose sum is σ = 19039680. Its totient is φ = 6229440.

The previous prime is 11789983. The next prime is 11790017. The reversal of 11789985 is 58998711.

It is not a de Polignac number, because 11789985 - 2¹ = 11789983 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11789983) 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 in 15 ways as a sum of consecutive naturals, for example, 1971 + ... + 5240.

It is an arithmetic number, because the mean of its divisors is an integer number (1189980).

Almost surely, 2^11789985 is an apocalyptic number.

11789985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11789985 is a deficient number, since it is larger than the sum of its proper divisors (7249695).

11789985 is a wasteful number, since it uses less digits than its factorization.

11789985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7328.

The product of its digits is 181440, while the sum is 48.

The square root of 11789985 is about 3433.6547584170. The cubic root of 11789985 is about 227.5993849871.

The spelling of 11789985 in words is "eleven million, seven hundred eighty-nine thousand, nine hundred eighty-five".