12786849 has 16 divisors (see below), whose sum is σ = 19555840. Its totient is φ = 8249040.

The previous prime is 12786847. The next prime is 12786863. The reversal of 12786849 is 94868721.

It is not a de Polignac number, because 12786849 - 2¹ = 12786847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12786847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6802 + ... + 8475.

It is an arithmetic number, because the mean of its divisors is an integer number (1222240).

Almost surely, 2^12786849 is an apocalyptic number.

It is an amenable number.

12786849 is a deficient number, since it is larger than the sum of its proper divisors (6768991).

12786849 is a wasteful number, since it uses less digits than its factorization.

12786849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15317 (or 15311 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12786849 is about 3575.8703835570. The cubic root of 12786849 is about 233.8412796108.

The spelling of 12786849 in words is "twelve million, seven hundred eighty-six thousand, eight hundred forty-nine".