8442218 has 4 divisors (see below), whose sum is σ = 12663330. Its totient is φ = 4221108.

The previous prime is 8442167. The next prime is 8442221. The reversal of 8442218 is 8122448.

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

It can be written as a sum of positive squares in only one way, i.e., 6744409 + 1697809 = 2597^2 + 1303^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110553 + ... + 2110556.

Almost surely, 2^8442218 is an apocalyptic number.

8442218 is a deficient number, since it is larger than the sum of its proper divisors (4221112).

8442218 is a wasteful number, since it uses less digits than its factorization.

8442218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221111.

The product of its digits is 4096, while the sum is 29.

The square root of 8442218 is about 2905.5495177333. The cubic root of 8442218 is about 203.6192597217.

The spelling of 8442218 in words is "eight million, four hundred forty-two thousand, two hundred eighteen".