12093509 has 2 divisors, whose sum is σ = 12093510. Its totient is φ = 12093508.

The previous prime is 12093479. The next prime is 12093517. The reversal of 12093509 is 90539021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9628609 + 2464900 = 3103^2 + 1570^2 .

It is an emirp because it is prime and its reverse (90539021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12093509 - 2²⁰ = 11044933 is a prime.

It is a plaindrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12093559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6046754 + 6046755.

It is an arithmetic number, because the mean of its divisors is an integer number (6046755).

Almost surely, 2^12093509 is an apocalyptic number.

It is an amenable number.

12093509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12093509 is an equidigital number, since it uses as much as digits as its factorization.

12093509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 12093509 is about 3477.5722853738. The cubic root of 12093509 is about 229.5359832068.

The spelling of 12093509 in words is "twelve million, ninety-three thousand, five hundred nine".