12985839 has 10 divisors (see below), whose sum is σ = 19398720. Its totient is φ = 8657172.

The previous prime is 12985801. The next prime is 12985867. The reversal of 12985839 is 93858921.

It is a happy number.

It is not a de Polignac number, because 12985839 - 2¹¹ = 12983791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12985794 and 12985803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12985139) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80079 + ... + 80240.

It is an arithmetic number, because the mean of its divisors is an integer number (1939872).

Almost surely, 2^12985839 is an apocalyptic number.

12985839 is a deficient number, since it is larger than the sum of its proper divisors (6412881).

12985839 is an equidigital number, since it uses as much as digits as its factorization.

12985839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160331 (or 160322 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 12985839 is about 3603.5869630134. The cubic root of 12985839 is about 235.0480601871.

It can be divided in two parts, 12985 and 839, that added together give a cube (13824 = 24³).

The spelling of 12985839 in words is "twelve million, nine hundred eighty-five thousand, eight hundred thirty-nine".