209996 has 12 divisors (see below), whose sum is σ = 375648. Its totient is φ = 102672.

The previous prime is 209987. The next prime is 210011. The reversal of 209996 is 699902.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 209996.

It is an unprimeable number.

209996 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 in 3 ways as a sum of consecutive naturals, for example, 371 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (31304).

2²⁰⁹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

209996 is a deficient number, since it is larger than the sum of its proper divisors (165652).

209996 is a wasteful number, since it uses less digits than its factorization.

209996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 209996 is about 458.2532051170. The cubic root of 209996 is about 59.4388421334.

The spelling of 209996 in words is "two hundred nine thousand, nine hundred ninety-six".