220489 has 4 divisors (see below), whose sum is σ = 223360. Its totient is φ = 217620.

The previous prime is 220471. The next prime is 220511. The reversal of 220489 is 984022.

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 220489 - 2⁷ = 220361 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (220469) 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, 1317 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (55840).

2²²⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

220489 is a deficient number, since it is larger than the sum of its proper divisors (2871).

220489 is an equidigital number, since it uses as much as digits as its factorization.

220489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 220489 is about 469.5625623918. The cubic root of 220489 is about 60.4128015495.

The spelling of 220489 in words is "two hundred twenty thousand, four hundred eighty-nine".