220349 has 4 divisors (see below), whose sum is σ = 221760. Its totient is φ = 218940.

The previous prime is 220333. The next prime is 220351. The reversal of 220349 is 943022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220349 - 2⁴ = 220333 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 220349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220369) 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, 437 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2²²⁰³⁴⁹ is an apocalyptic number.

It is an amenable number.

220349 is a deficient number, since it is larger than the sum of its proper divisors (1411).

220349 is a wasteful number, since it uses less digits than its factorization.

220349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 220349 is about 469.4134638035. The cubic root of 220349 is about 60.4000124264.

The spelling of 220349 in words is "two hundred twenty thousand, three hundred forty-nine".