980809 has 8 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 915600.

The previous prime is 980803. The next prime is 980827. The reversal of 980809 is 908089.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 980809 - 2³ = 980801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (980801) 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 7 ways as a sum of consecutive naturals, for example, 354 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2⁹⁸⁰⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

980809 is a deficient number, since it is larger than the sum of its proper divisors (67511).

980809 is a wasteful number, since it uses less digits than its factorization.

980809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 980809 is about 990.3580160730. The cubic root of 980809 is about 99.3561636437.

It can be divided in two parts, 98080 and 9, that added together give a palindrome (98089).

The spelling of 980809 in words is "nine hundred eighty thousand, eight hundred nine".