980209 has 4 divisors (see below), whose sum is σ = 996340. Its totient is φ = 964080.

The previous prime is 980197. The next prime is 980219. The reversal of 980209 is 902089.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119025 + 861184 = 345^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 980209 - 2⁷ = 980081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7974 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (249085).

2⁹⁸⁰²⁰⁹ is an apocalyptic number.

It is an amenable number.

980209 is a deficient number, since it is larger than the sum of its proper divisors (16131).

980209 is a wasteful number, since it uses less digits than its factorization.

980209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 980209 is about 990.0550489746. The cubic root of 980209 is about 99.3358994678.

The spelling of 980209 in words is "nine hundred eighty thousand, two hundred nine".