980009 has 4 divisors (see below), whose sum is σ = 994704. Its totient is φ = 965316.

The previous prime is 979987. The next prime is 980027. The reversal of 980009 is 900089.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 980009.

It is not an unprimeable number, because it can be changed into a prime (980069) 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 3 ways as a sum of consecutive naturals, for example, 7247 + ... + 7380.

It is an arithmetic number, because the mean of its divisors is an integer number (248676).

2⁹⁸⁰⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

980009 is a deficient number, since it is larger than the sum of its proper divisors (14695).

980009 is a wasteful number, since it uses less digits than its factorization.

980009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14694.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 980009 is about 989.9540393372. The cubic root of 980009 is about 99.3291429049.

The spelling of 980009 in words is "nine hundred eighty thousand, nine".