219998 has 8 divisors (see below), whose sum is σ = 331992. Its totient is φ = 109336.

The previous prime is 219983. The next prime is 220009. The reversal of 219998 is 899912.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461 + ... + 807.

It is an arithmetic number, because the mean of its divisors is an integer number (41499).

2²¹⁹⁹⁹⁸ is an apocalyptic number.

219998 is a deficient number, since it is larger than the sum of its proper divisors (111994).

219998 is a wasteful number, since it uses less digits than its factorization.

219998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its digits is 11664, while the sum is 38.

The square root of 219998 is about 469.0394439703. The cubic root of 219998 is about 60.3679244338.

The spelling of 219998 in words is "two hundred nineteen thousand, nine hundred ninety-eight".