4221419 has 2 divisors, whose sum is σ = 4221420. Its totient is φ = 4221418.

The previous prime is 4221409. The next prime is 4221421. The reversal of 4221419 is 9141224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4221419 is a prime.

It is a super-2 number, since 2×4221419² = 35640756747122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4221421, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221394 and 4221403.

It is not a weakly prime, because it can be changed into another prime (4221409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110709 + 2110710.

It is an arithmetic number, because the mean of its divisors is an integer number (2110710).

Almost surely, 2^4221419 is an apocalyptic number.

4221419 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221419 is an equidigital number, since it uses as much as digits as its factorization.

4221419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 4221419 is about 2054.6092085844. The cubic root of 4221419 is about 161.6166697464.

The spelling of 4221419 in words is "four million, two hundred twenty-one thousand, four hundred nineteen".