219419117 has 2 divisors, whose sum is σ = 219419118. Its totient is φ = 219419116.

The previous prime is 219419089. The next prime is 219419159. The reversal of 219419117 is 711914912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158407396 + 61011721 = 12586^2 + 7811^2 .

It is a cyclic number.

It is not a de Polignac number, because 219419117 - 2⁸ = 219418861 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 (219419177) 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, 109709558 + 109709559.

It is an arithmetic number, because the mean of its divisors is an integer number (109709559).

Almost surely, 2^219419117 is an apocalyptic number.

It is an amenable number.

219419117 is a deficient number, since it is larger than the sum of its proper divisors (1).

219419117 is an equidigital number, since it uses as much as digits as its factorization.

219419117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 35.

The square root of 219419117 is about 14812.8024694856. The cubic root of 219419117 is about 603.1492901061.

The spelling of 219419117 in words is "two hundred nineteen million, four hundred nineteen thousand, one hundred seventeen".