4219819 has 4 divisors (see below), whose sum is σ = 4365360. Its totient is φ = 4074280.

The previous prime is 4219799. The next prime is 4219823. The reversal of 4219819 is 9189124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4219819 - 2¹¹ = 4217771 is a prime.

It is a super-2 number, since 2×4219819² = 35613744785522, which contains 22 as substring.

It is a Duffinian number.

4219819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4219849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72727 + ... + 72784.

It is an arithmetic number, because the mean of its divisors is an integer number (1091340).

Almost surely, 2^4219819 is an apocalyptic number.

4219819 is a deficient number, since it is larger than the sum of its proper divisors (145541).

4219819 is a wasteful number, since it uses less digits than its factorization.

4219819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145540.

The product of its digits is 5184, while the sum is 34.

The square root of 4219819 is about 2054.2198032343. The cubic root of 4219819 is about 161.5962485446.

The spelling of 4219819 in words is "four million, two hundred nineteen thousand, eight hundred nineteen".