209896 has 8 divisors (see below), whose sum is σ = 393570. Its totient is φ = 104944.

The previous prime is 209887. The next prime is 209917. The reversal of 209896 is 698902.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 7396 = 450^2 + 86^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13111 + ... + 13126.

2²⁰⁹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

209896 is a deficient number, since it is larger than the sum of its proper divisors (183674).

209896 is a wasteful number, since it uses less digits than its factorization.

209896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26243 (or 26239 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 209896 is about 458.1440821401. The cubic root of 209896 is about 59.4294057188.

The spelling of 209896 in words is "two hundred nine thousand, eight hundred ninety-six".