209480 has 16 divisors (see below), whose sum is σ = 471420. Its totient is φ = 83776.

The previous prime is 209477. The next prime is 209497. The reversal of 209480 is 84902.

It can be written as a sum of positive squares in 2 ways, for example, as 206116 + 3364 = 454^2 + 58^2 .

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 209480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579 + ... + 2658.

2²⁰⁹⁴⁸⁰ is an apocalyptic number.

209480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209480 is an abundant number, since it is smaller than the sum of its proper divisors (261940).

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

209480 is a wasteful number, since it uses less digits than its factorization.

209480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248 (or 5244 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 209480 is about 457.6898513186. The cubic root of 209480 is about 59.3901180340.

The spelling of 209480 in words is "two hundred nine thousand, four hundred eighty".