11985169 has 8 divisors (see below), whose sum is σ = 13871360. Its totient is φ = 10142496.

The previous prime is 11985163. The next prime is 11985191. The reversal of 11985169 is 96158911.

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

It is not a de Polignac number, because 11985169 - 2⁵ = 11985137 is a prime.

It is a super-2 number, since 2×11985169² = 287288551917122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11985163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10284 + ... + 11389.

It is an arithmetic number, because the mean of its divisors is an integer number (1733920).

Almost surely, 2^11985169 is an apocalyptic number.

It is an amenable number.

11985169 is a deficient number, since it is larger than the sum of its proper divisors (1886191).

11985169 is an equidigital number, since it uses as much as digits as its factorization.

11985169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21759.

The product of its digits is 19440, while the sum is 40.

The square root of 11985169 is about 3461.9602828455. The cubic root of 11985169 is about 228.8484915335.

The spelling of 11985169 in words is "eleven million, nine hundred eighty-five thousand, one hundred sixty-nine".