11992817 has 2 divisors, whose sum is σ = 11992818. Its totient is φ = 11992816.

The previous prime is 11992811. The next prime is 11992831. The reversal of 11992817 is 71829911.

11992817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 323761 = 3416^2 + 569^2 .

It is an emirp because it is prime and its reverse (71829911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11992817 - 2¹² = 11988721 is a prime.

It is not a weakly prime, because it can be changed into another prime (11992811) 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, 5996408 + 5996409.

It is an arithmetic number, because the mean of its divisors is an integer number (5996409).

Almost surely, 2^11992817 is an apocalyptic number.

It is an amenable number.

11992817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11992817 is an equidigital number, since it uses as much as digits as its factorization.

11992817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 11992817 is about 3463.0646831961. The cubic root of 11992817 is about 228.8971589353.

The spelling of 11992817 in words is "eleven million, nine hundred ninety-two thousand, eight hundred seventeen".