4219847 has 2 divisors, whose sum is σ = 4219848. Its totient is φ = 4219846.

The previous prime is 4219823. The next prime is 4219849. The reversal of 4219847 is 7489124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4219847 - 2¹² = 4215751 is a prime.

Together with 4219849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4219849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109923 + 2109924.

It is an arithmetic number, because the mean of its divisors is an integer number (2109924).

Almost surely, 2^4219847 is an apocalyptic number.

4219847 is a deficient number, since it is larger than the sum of its proper divisors (1).

4219847 is an equidigital number, since it uses as much as digits as its factorization.

4219847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 4219847 is about 2054.2266184625. The cubic root of 4219847 is about 161.5966059600.

The spelling of 4219847 in words is "four million, two hundred nineteen thousand, eight hundred forty-seven".