12407609 has 2 divisors, whose sum is σ = 12407610. Its totient is φ = 12407608.

The previous prime is 12407581. The next prime is 12407611. The reversal of 12407609 is 90670421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 157609 = 3500^2 + 397^2 .

It is an emirp because it is prime and its reverse (90670421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12407609 - 2¹² = 12403513 is a prime.

It is a super-2 number, since 2×12407609² = 307897522193762, which contains 22 as substring.

Together with 12407611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12407639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203804 + 6203805.

It is an arithmetic number, because the mean of its divisors is an integer number (6203805).

Almost surely, 2^12407609 is an apocalyptic number.

It is an amenable number.

12407609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12407609 is an equidigital number, since it uses as much as digits as its factorization.

12407609 is an evil number, because the sum of its binary digits is even.

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

The square root of 12407609 is about 3522.4436120398. The cubic root of 12407609 is about 231.5062390735.

The spelling of 12407609 in words is "twelve million, four hundred seven thousand, six hundred nine".