12287609 has 2 divisors, whose sum is σ = 12287610. Its totient is φ = 12287608.

The previous prime is 12287593. The next prime is 12287641. The reversal of 12287609 is 90678221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 727609 = 3400^2 + 853^2 .

It is a cyclic number.

It is not a de Polignac number, because 12287609 - 2⁴ = 12287593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12287689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143804 + 6143805.

It is an arithmetic number, because the mean of its divisors is an integer number (6143805).

Almost surely, 2^12287609 is an apocalyptic number.

It is an amenable number.

12287609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12287609 is an equidigital number, since it uses as much as digits as its factorization.

12287609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12287609 is about 3505.3685968811. The cubic root of 12287609 is about 230.7574836556.

The spelling of 12287609 in words is "twelve million, two hundred eighty-seven thousand, six hundred nine".