12087709 has 2 divisors, whose sum is σ = 12087710. Its totient is φ = 12087708.

The previous prime is 12087703. The next prime is 12087727. The reversal of 12087709 is 90778021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 2815684 = 3045^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 12087709 - 2²¹ = 9990557 is a prime.

It is a super-2 number, since 2×12087709² = 292225417737362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12087703) 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 as a sum of consecutive naturals, namely, 6043854 + 6043855.

It is an arithmetic number, because the mean of its divisors is an integer number (6043855).

Almost surely, 2^12087709 is an apocalyptic number.

It is an amenable number.

12087709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087709 is an equidigital number, since it uses as much as digits as its factorization.

12087709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 12087709 is about 3476.7382702757. The cubic root of 12087709 is about 229.4992824833.

The spelling of 12087709 in words is "twelve million, eighty-seven thousand, seven hundred nine".