12099917 has 2 divisors, whose sum is σ = 12099918. Its totient is φ = 12099916.

The previous prime is 12099911. The next prime is 12099929. The reversal of 12099917 is 71999021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 682276 = 3379^2 + 826^2 .

It is a cyclic number.

It is not a de Polignac number, because 12099917 - 2¹⁶ = 12034381 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 (12099911) 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, 6049958 + 6049959.

It is an arithmetic number, because the mean of its divisors is an integer number (6049959).

Almost surely, 2^12099917 is an apocalyptic number.

It is an amenable number.

12099917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12099917 is an equidigital number, since it uses as much as digits as its factorization.

12099917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 12099917 is about 3478.4934957536. The cubic root of 12099917 is about 229.5765175371.

The spelling of 12099917 in words is "twelve million, ninety-nine thousand, nine hundred seventeen".