209398 has 8 divisors (see below), whose sum is σ = 358992. Its totient is φ = 89736.

The previous prime is 209393. The next prime is 209401. The reversal of 209398 is 893902.

It is a happy number.

209398 is nontrivially palindromic in base 12.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209393) by changing a digit.

209398 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 7465 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (44874).

2²⁰⁹³⁹⁸ is an apocalyptic number.

209398 is a deficient number, since it is larger than the sum of its proper divisors (149594).

209398 is a wasteful number, since it uses less digits than its factorization.

209398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14966.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 209398 is about 457.6002622377. The cubic root of 209398 is about 59.3823676914.

The spelling of 209398 in words is "two hundred nine thousand, three hundred ninety-eight".