16344217 has 2 divisors, whose sum is σ = 16344218. Its totient is φ = 16344216.

The previous prime is 16344187. The next prime is 16344221. The reversal of 16344217 is 71244361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 1413721 = 3864^2 + 1189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16344217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16344247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8172108 + 8172109.

It is an arithmetic number, because the mean of its divisors is an integer number (8172109).

Almost surely, 2^16344217 is an apocalyptic number.

It is an amenable number.

16344217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16344217 is an equidigital number, since it uses as much as digits as its factorization.

16344217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 16344217 is about 4042.7981646380. The cubic root of 16344217 is about 253.7784301665.

Adding to 16344217 its reverse (71244361), we get a palindrome (87588578).

It can be divided in two parts, 16344 and 217, that added together give a palindrome (16561).

The spelling of 16344217 in words is "sixteen million, three hundred forty-four thousand, two hundred seventeen".