4004218 has 8 divisors (see below), whose sum is σ = 6046560. Its totient is φ = 1988700.

The previous prime is 4004213. The next prime is 4004219. The reversal of 4004218 is 8124004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4004195 and 4004204.

It is not an unprimeable number, because it can be changed into a prime (4004213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6328 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (755820).

Almost surely, 2^4004218 is an apocalyptic number.

4004218 is a deficient number, since it is larger than the sum of its proper divisors (2042342).

4004218 is a wasteful number, since it uses less digits than its factorization.

4004218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4004218 is about 2001.0542221539. The cubic root of 4004218 is about 158.7958827426.

The spelling of 4004218 in words is "four million, four thousand, two hundred eighteen".