12985843 has 8 divisors (see below), whose sum is σ = 14012768. Its totient is φ = 11962944.

The previous prime is 12985801. The next prime is 12985867. The reversal of 12985843 is 34858921.

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 12985843 - 2¹³ = 12977651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12985796 and 12985805.

It is not an unprimeable number, because it can be changed into a prime (12985043) 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, 12055 + ... + 13087.

It is an arithmetic number, because the mean of its divisors is an integer number (1751596).

Almost surely, 2^12985843 is an apocalyptic number.

12985843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12985843 is a deficient number, since it is larger than the sum of its proper divisors (1026925).

12985843 is a wasteful number, since it uses less digits than its factorization.

12985843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013.

The product of its digits is 69120, while the sum is 40.

The square root of 12985843 is about 3603.5875180159. The cubic root of 12985843 is about 235.0480843209.

The spelling of 12985843 in words is "twelve million, nine hundred eighty-five thousand, eight hundred forty-three".