2218279 has 12 divisors (see below), whose sum is σ = 2733264. Its totient is φ = 1788864.

The previous prime is 2218277. The next prime is 2218283. The reversal of 2218279 is 9728122.

2218279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2218279 - 2¹ = 2218277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2218279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218277) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 499 + ... + 2164.

It is an arithmetic number, because the mean of its divisors is an integer number (227772).

2^2218279 is an apocalyptic number.

2218279 is a deficient number, since it is larger than the sum of its proper divisors (514985).

2218279 is a wasteful number, since it uses less digits than its factorization.

2218279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694 (or 2687 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 2218279 is about 1489.3888008173. The cubic root of 2218279 is about 130.4183563743.

The spelling of 2218279 in words is "two million, two hundred eighteen thousand, two hundred seventy-nine".