4219838 has 16 divisors (see below), whose sum is σ = 7334880. Its totient is φ = 1783296.

The previous prime is 4219823. The next prime is 4219847. The reversal of 4219838 is 8389124.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4219798 and 4219807.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1043 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (458430).

Almost surely, 2^4219838 is an apocalyptic number.

4219838 is a deficient number, since it is larger than the sum of its proper divisors (3115042).

4219838 is a wasteful number, since it uses less digits than its factorization.

4219838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211.

The product of its digits is 13824, while the sum is 35.

The square root of 4219838 is about 2054.2244278559. The cubic root of 4219838 is about 161.5964910766.

The spelling of 4219838 in words is "four million, two hundred nineteen thousand, eight hundred thirty-eight".