12985849 has 4 divisors (see below), whose sum is σ = 13072000. Its totient is φ = 12899700.

The previous prime is 12985801. The next prime is 12985867. The reversal of 12985849 is 94858921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94858921 = 193 ⋅491497.

It is a cyclic number.

It is not a de Polignac number, because 12985849 - 2¹⁵ = 12953081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12985799 and 12985808.

It is not an unprimeable number, because it can be changed into a prime (12985549) 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 3 ways as a sum of consecutive naturals, for example, 42849 + ... + 43150.

It is an arithmetic number, because the mean of its divisors is an integer number (3268000).

Almost surely, 2^12985849 is an apocalyptic number.

It is an amenable number.

12985849 is a deficient number, since it is larger than the sum of its proper divisors (86151).

12985849 is an equidigital number, since it uses as much as digits as its factorization.

12985849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86150.

The product of its digits is 207360, while the sum is 46.

The square root of 12985849 is about 3603.5883505195. The cubic root of 12985849 is about 235.0481205215.

The spelling of 12985849 in words is "twelve million, nine hundred eighty-five thousand, eight hundred forty-nine".