209394 has 12 divisors (see below), whose sum is σ = 453726. Its totient is φ = 69792.

The previous prime is 209393. The next prime is 209401. The reversal of 209394 is 493902.

It can be written as a sum of positive squares in only one way, i.e., 164025 + 45369 = 405^2 + 213^2 .

It is a plaindrome in base 11.

It is a congruent number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5799 + ... + 5834.

2²⁰⁹³⁹⁴ is an apocalyptic number.

209394 is an abundant number, since it is smaller than the sum of its proper divisors (244332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209394 is a wasteful number, since it uses less digits than its factorization.

209394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11641 (or 11638 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 209394 is about 457.5958915899. The cubic root of 209394 is about 59.3819895742.

It can be divided in two parts, 2093 and 94, that added together give a 7-th power (2187 = 3⁷).

The spelling of 209394 in words is "two hundred nine thousand, three hundred ninety-four".