214440217 has 2 divisors, whose sum is σ = 214440218. Its totient is φ = 214440216.

The previous prime is 214440199. The next prime is 214440229. The reversal of 214440217 is 712044412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129413376 + 85026841 = 11376^2 + 9221^2 .

It is a cyclic number.

It is not a de Polignac number, because 214440217 - 2⁷ = 214440089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214440191 and 214440200.

It is not a weakly prime, because it can be changed into another prime (214440257) 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, 107220108 + 107220109.

It is an arithmetic number, because the mean of its divisors is an integer number (107220109).

Almost surely, 2^214440217 is an apocalyptic number.

It is an amenable number.

214440217 is a deficient number, since it is larger than the sum of its proper divisors (1).

214440217 is an equidigital number, since it uses as much as digits as its factorization.

214440217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 214440217 is about 14643.7774156807. Note that the first 3 decimals coincide. The cubic root of 214440217 is about 598.5522660685.

Adding to 214440217 its reverse (712044412), we get a palindrome (926484629).

The spelling of 214440217 in words is "two hundred fourteen million, four hundred forty thousand, two hundred seventeen".