12159885 has 8 divisors (see below), whose sum is σ = 19455840. Its totient is φ = 6485264.

The previous prime is 12159881. The next prime is 12159899. The reversal of 12159885 is 58895121.

12159885 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 a cyclic number.

It is not a de Polignac number, because 12159885 - 2² = 12159881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12159881) 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 7 ways as a sum of consecutive naturals, for example, 405315 + ... + 405344.

It is an arithmetic number, because the mean of its divisors is an integer number (2431980).

Almost surely, 2^12159885 is an apocalyptic number.

12159885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12159885 is a deficient number, since it is larger than the sum of its proper divisors (7295955).

12159885 is an equidigital number, since it uses as much as digits as its factorization.

12159885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810667.

The product of its digits is 28800, while the sum is 39.

The square root of 12159885 is about 3487.1026655377. The cubic root of 12159885 is about 229.9551582398.

Subtracting from 12159885 its sum of digits (39), we obtain a triangular number (12159846 = T₄₉₃₁).

It can be divided in two parts, 121 and 59885, that added together give a palindrome (60006).

The spelling of 12159885 in words is "twelve million, one hundred fifty-nine thousand, eight hundred eighty-five".