12686229 has 6 divisors (see below), whose sum is σ = 18324566. Its totient is φ = 8457480.

The previous prime is 12686213. The next prime is 12686251. The reversal of 12686229 is 92268621.

It is a happy number.

12686229 is a `hidden beast` number, since 1 + 26 + 8 + 622 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 6260004 = 2535^2 + 2502^2 .

It is not a de Polignac number, because 12686229 - 2⁴ = 12686213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12686193 and 12686202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 704782 + ... + 704799.

Almost surely, 2^12686229 is an apocalyptic number.

It is an amenable number.

12686229 is a deficient number, since it is larger than the sum of its proper divisors (5638337).

12686229 is a wasteful number, since it uses less digits than its factorization.

12686229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409587 (or 1409584 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 12686229 is about 3561.7732943016. The cubic root of 12686229 is about 233.2262962578.

The spelling of 12686229 in words is "twelve million, six hundred eighty-six thousand, two hundred twenty-nine".