219994 has 8 divisors (see below), whose sum is σ = 341460. Its totient is φ = 106176.

The previous prime is 219983. The next prime is 220009. The reversal of 219994 is 499912.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 5625 = 463^2 + 75^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a nialpdrome in base 8.

It is an unprimeable number.

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, 1839 + ... + 1954.

2²¹⁹⁹⁹⁴ is an apocalyptic number.

219994 is a deficient number, since it is larger than the sum of its proper divisors (121466).

219994 is a wasteful number, since it uses less digits than its factorization.

219994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824.

The product of its digits is 5832, while the sum is 34.

The square root of 219994 is about 469.0351799172. The cubic root of 219994 is about 60.3675585620.

The spelling of 219994 in words is "two hundred nineteen thousand, nine hundred ninety-four".