982079981 has 2 divisors, whose sum is σ = 982079982. Its totient is φ = 982079980.

The previous prime is 982079963. The next prime is 982080017. The reversal of 982079981 is 189970289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791915881 + 190164100 = 28141^2 + 13790^2 .

It is a cyclic number.

It is not a de Polignac number, because 982079981 - 2¹⁰ = 982078957 is a prime.

It is a super-2 number, since 2×982079981² = 1928962178161920722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (982079911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491039990 + 491039991.

It is an arithmetic number, because the mean of its divisors is an integer number (491039991).

Almost surely, 2^982079981 is an apocalyptic number.

It is an amenable number.

982079981 is a deficient number, since it is larger than the sum of its proper divisors (1).

982079981 is an equidigital number, since it uses as much as digits as its factorization.

982079981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 982079981 is about 31338.1553541366. The cubic root of 982079981 is about 993.9906200238.

The spelling of 982079981 in words is "nine hundred eighty-two million, seventy-nine thousand, nine hundred eighty-one".