220449 has 4 divisors (see below), whose sum is σ = 293936. Its totient is φ = 146964.

The previous prime is 220447. The next prime is 220469. The reversal of 220449 is 944022.

220449 is nontrivially palindromic in base 14.

220449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 220449 - 2¹ = 220447 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220447) 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, 36739 + ... + 36744.

It is an arithmetic number, because the mean of its divisors is an integer number (73484).

2²²⁰⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

220449 is a deficient number, since it is larger than the sum of its proper divisors (73487).

220449 is an equidigital number, since it uses as much as digits as its factorization.

220449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73486.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 220449 is about 469.5199676265. The cubic root of 220449 is about 60.4091480669.

The spelling of 220449 in words is "two hundred twenty thousand, four hundred forty-nine".