219999419 has 2 divisors, whose sum is σ = 219999420. Its totient is φ = 219999418.

The previous prime is 219999407. The next prime is 219999421. The reversal of 219999419 is 914999912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219999419 - 2¹² = 219995323 is a prime.

It is a super-2 number, since 2×219999419² = 96799488720675122, which contains 22 as substring.

Together with 219999421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (219999469) 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, 109999709 + 109999710.

It is an arithmetic number, because the mean of its divisors is an integer number (109999710).

Almost surely, 2^219999419 is an apocalyptic number.

219999419 is a deficient number, since it is larger than the sum of its proper divisors (1).

219999419 is an equidigital number, since it uses as much as digits as its factorization.

219999419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 53.

The square root of 219999419 is about 14832.3773886724. The cubic root of 219999419 is about 603.6805422570.

The spelling of 219999419 in words is "two hundred nineteen million, nine hundred ninety-nine thousand, four hundred nineteen".