220459 has 4 divisors (see below), whose sum is σ = 221400. Its totient is φ = 219520.

The previous prime is 220447. The next prime is 220469. The reversal of 220459 is 954022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 954022 = 2 ⋅477011.

It is a cyclic number.

It is not a de Polignac number, because 220459 - 2¹⁷ = 89387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220469) 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 3 ways as a sum of consecutive naturals, for example, 204 + ... + 694.

It is an arithmetic number, because the mean of its divisors is an integer number (55350).

2²²⁰⁴⁵⁹ is an apocalyptic number.

220459 is a deficient number, since it is larger than the sum of its proper divisors (941).

220459 is an equidigital number, since it uses as much as digits as its factorization.

220459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 220459 is about 469.5306166801. The cubic root of 220459 is about 60.4100614790.

The spelling of 220459 in words is "two hundred twenty thousand, four hundred fifty-nine".