219930 has 16 divisors (see below), whose sum is σ = 527904. Its totient is φ = 58640.

The previous prime is 219917. The next prime is 219931. The reversal of 219930 is 39912.

It is a happy number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 219930.

It is not an unprimeable number, because it can be changed into a prime (219931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3636 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (32994).

2²¹⁹⁹³⁰ is an apocalyptic number.

219930 is an abundant number, since it is smaller than the sum of its proper divisors (307974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219930 is a wasteful number, since it uses less digits than its factorization.

219930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 219930 is about 468.9669497950. The cubic root of 219930 is about 60.3617040107.

The spelling of 219930 in words is "two hundred nineteen thousand, nine hundred thirty".