209144 has 16 divisors (see below), whose sum is σ = 422520. Its totient is φ = 96480.

The previous prime is 209123. The next prime is 209147. The reversal of 209144 is 441902.

209144 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209147) 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, 902 + ... + 1109.

2²⁰⁹¹⁴⁴ is an apocalyptic number.

It is an amenable number.

209144 is an abundant number, since it is smaller than the sum of its proper divisors (213376).

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

209144 is a wasteful number, since it uses less digits than its factorization.

209144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 209144 is about 457.3226432181. The cubic root of 209144 is about 59.3583476847.

It can be divided in two parts, 209 and 144, that added together give a palindrome (353).

The spelling of 209144 in words is "two hundred nine thousand, one hundred forty-four".