219994219 has 2 divisors, whose sum is σ = 219994220. Its totient is φ = 219994218.

The previous prime is 219994213. The next prime is 219994237. The reversal of 219994219 is 912499912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 219994219 - 2¹⁵ = 219961451 is a prime.

It is a super-2 number, since 2×219994219² = 96794912786839922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (219994213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109997109 + 109997110.

It is an arithmetic number, because the mean of its divisors is an integer number (109997110).

Almost surely, 2^219994219 is an apocalyptic number.

219994219 is a deficient number, since it is larger than the sum of its proper divisors (1).

219994219 is an equidigital number, since it uses as much as digits as its factorization.

219994219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 46.

The square root of 219994219 is about 14832.2020954409. The cubic root of 219994219 is about 603.6757859360.

The spelling of 219994219 in words is "two hundred nineteen million, nine hundred ninety-four thousand, two hundred nineteen".