4216819 has 2 divisors, whose sum is σ = 4216820. Its totient is φ = 4216818.

The previous prime is 4216813. The next prime is 4216847. The reversal of 4216819 is 9186124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4216819 - 2³ = 4216811 is a prime.

It is a super-2 number, since 2×4216819² = 35563124957522, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4216811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108409 + 2108410.

It is an arithmetic number, because the mean of its divisors is an integer number (2108410).

Almost surely, 2^4216819 is an apocalyptic number.

4216819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4216819 is an equidigital number, since it uses as much as digits as its factorization.

4216819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 4216819 is about 2053.4894691719. The cubic root of 4216819 is about 161.5579448737.

It can be divided in two parts, 42 and 16819, that added together give a palindrome (16861).

The spelling of 4216819 in words is "four million, two hundred sixteen thousand, eight hundred nineteen".