219973 has 4 divisors (see below), whose sum is σ = 236908. Its totient is φ = 203040.

The previous prime is 219971. The next prime is 219977. The reversal of 219973 is 379912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91809 + 128164 = 303^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 219973 - 2¹ = 219971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219971) 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, 8448 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (59227).

2²¹⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

219973 is a deficient number, since it is larger than the sum of its proper divisors (16935).

219973 is a wasteful number, since it uses less digits than its factorization.

219973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16934.

The product of its digits is 3402, while the sum is 31.

The square root of 219973 is about 469.0127930025. The cubic root of 219973 is about 60.3656376625.

The spelling of 219973 in words is "two hundred nineteen thousand, nine hundred seventy-three".