12009637 has 2 divisors, whose sum is σ = 12009638. Its totient is φ = 12009636.

The previous prime is 12009629. The next prime is 12009643. The reversal of 12009637 is 73690021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8300161 + 3709476 = 2881^2 + 1926^2 .

It is an emirp because it is prime and its reverse (73690021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12009637 - 2³ = 12009629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12009337) 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 as a sum of consecutive naturals, namely, 6004818 + 6004819.

It is an arithmetic number, because the mean of its divisors is an integer number (6004819).

Almost surely, 2^12009637 is an apocalyptic number.

It is an amenable number.

12009637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12009637 is an equidigital number, since it uses as much as digits as its factorization.

12009637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 12009637 is about 3465.4923171174. The cubic root of 12009637 is about 229.0041188405.

Adding to 12009637 its reverse (73690021), we get a palindrome (85699658).

The spelling of 12009637 in words is "twelve million, nine thousand, six hundred thirty-seven".