219808 has 12 divisors (see below), whose sum is σ = 432810. Its totient is φ = 109888.

The previous prime is 219799. The next prime is 219809. The reversal of 219808 is 808912.

It can be written as a sum of positive squares in only one way, i.e., 219024 + 784 = 468^2 + 28^2 .

It is not an unprimeable number, because it can be changed into a prime (219809) by changing a digit.

219808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3403 + ... + 3466.

2²¹⁹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

219808 is a deficient number, since it is larger than the sum of its proper divisors (213002).

219808 is an equidigital number, since it uses as much as digits as its factorization.

219808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879 (or 6871 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 219808 is about 468.8368586193. The cubic root of 219808 is about 60.3505406254.

The spelling of 219808 in words is "two hundred nineteen thousand, eight hundred eight".