218379 has 8 divisors (see below), whose sum is σ = 332800. Its totient is φ = 124776.

The previous prime is 218371. The next prime is 218381. The reversal of 218379 is 973812.

It is a happy number.

218379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 218379 - 2³ = 218371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5179 + ... + 5220.

It is an arithmetic number, because the mean of its divisors is an integer number (41600).

2²¹⁸³⁷⁹ is an apocalyptic number.

218379 is a deficient number, since it is larger than the sum of its proper divisors (114421).

218379 is a wasteful number, since it uses less digits than its factorization.

218379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409.

The product of its digits is 3024, while the sum is 30.

The square root of 218379 is about 467.3103893559. The cubic root of 218379 is about 60.2194739851.

It can be divided in two parts, 2 and 18379, that added together give a palindrome (18381).

The spelling of 218379 in words is "two hundred eighteen thousand, three hundred seventy-nine".