12709226 has 8 divisors (see below), whose sum is σ = 19084260. Its totient is φ = 6347808.

The previous prime is 12709219. The next prime is 12709237. The reversal of 12709226 is 62290721.

It is a Cunningham number, because it is equal to 3565²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 12709225 + 1 = 3565^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 611 + ... + 5078.

Almost surely, 2^12709226 is an apocalyptic number.

12709226 is a deficient number, since it is larger than the sum of its proper divisors (6375034).

12709226 is a wasteful number, since it uses less digits than its factorization.

12709226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12709226 is about 3565.0001402525. Note that the first 3 decimals coincide. The cubic root of 12709226 is about 233.3671384128.

Adding to 12709226 its reverse (62290721), we get a palindrome (74999947).

The spelling of 12709226 in words is "twelve million, seven hundred nine thousand, two hundred twenty-six".