980489 has 2 divisors, whose sum is σ = 980490. Its totient is φ = 980488.

The previous prime is 980471. The next prime is 980491. The reversal of 980489 is 984089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 156025 = 908^2 + 395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980489 is a prime.

It is a super-2 number, since 2×980489² = 1922717358242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 980491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 7 and base 15.

It is not a weakly prime, because it can be changed into another prime (980449) 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 as a sum of consecutive naturals, namely, 490244 + 490245.

It is an arithmetic number, because the mean of its divisors is an integer number (490245).

2⁹⁸⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

980489 is a deficient number, since it is larger than the sum of its proper divisors (1).

980489 is an equidigital number, since it uses as much as digits as its factorization.

980489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 980489 is about 990.1964451562. The cubic root of 980489 is about 99.3453571120.

Subtracting 980489 from its reverse (984089), we obtain a square (3600 = 60²).

The spelling of 980489 in words is "nine hundred eighty thousand, four hundred eighty-nine".