27430219 has 2 divisors, whose sum is σ = 27430220. Its totient is φ = 27430218.

The previous prime is 27430217. The next prime is 27430223. The reversal of 27430219 is 91203472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27430219 - 2¹ = 27430217 is a prime.

It is a super-2 number, since 2×27430219² = 1504833828775922, which contains 22 as substring.

Together with 27430217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27430213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715109 + 13715110.

It is an arithmetic number, because the mean of its divisors is an integer number (13715110).

Almost surely, 2^27430219 is an apocalyptic number.

27430219 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430219 is an equidigital number, since it uses as much as digits as its factorization.

27430219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 27430219 is about 5237.3866574848. The cubic root of 27430219 is about 301.5850147168.

The spelling of 27430219 in words is "twenty-seven million, four hundred thirty thousand, two hundred nineteen".