219135289 has 2 divisors, whose sum is σ = 219135290. Its totient is φ = 219135288.

The previous prime is 219135239. The next prime is 219135331. The reversal of 219135289 is 982531912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 106605625 = 10608^2 + 10325^2 .

It is a cyclic number.

It is not a de Polignac number, because 219135289 - 2²¹ = 217038137 is a prime.

It is a super-2 number, since 2×219135289² = 96040549770227042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (219135239) 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, 109567644 + 109567645.

It is an arithmetic number, because the mean of its divisors is an integer number (109567645).

Almost surely, 2^219135289 is an apocalyptic number.

It is an amenable number.

219135289 is a deficient number, since it is larger than the sum of its proper divisors (1).

219135289 is an equidigital number, since it uses as much as digits as its factorization.

219135289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 219135289 is about 14803.2188729344. The cubic root of 219135289 is about 602.8891114333.

The spelling of 219135289 in words is "two hundred nineteen million, one hundred thirty-five thousand, two hundred eighty-nine".