209150 has 24 divisors (see below), whose sum is σ = 401760. Its totient is φ = 80960.

The previous prime is 209147. The next prime is 209159. The reversal of 209150 is 51902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209159) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2306 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2²⁰⁹¹⁵⁰ is an apocalyptic number.

209150 is a deficient number, since it is larger than the sum of its proper divisors (192610).

209150 is a wasteful number, since it uses less digits than its factorization.

209150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 209150 is about 457.3292030912. The cubic root of 209150 is about 59.3589153106.

The spelling of 209150 in words is "two hundred nine thousand, one hundred fifty".