982438981 has 2 divisors, whose sum is σ = 982438982. Its totient is φ = 982438980.

The previous prime is 982438973. The next prime is 982438991. The reversal of 982438981 is 189834289.

982438981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877048225 + 105390756 = 29615^2 + 10266^2 .

It is an emirp because it is prime and its reverse (189834289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 982438981 - 2³ = 982438973 is a prime.

It is a super-2 number, since 2×982438981² = 1930372702776636722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (982438991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491219490 + 491219491.

It is an arithmetic number, because the mean of its divisors is an integer number (491219491).

Almost surely, 2^982438981 is an apocalyptic number.

It is an amenable number.

982438981 is a deficient number, since it is larger than the sum of its proper divisors (1).

982438981 is an equidigital number, since it uses as much as digits as its factorization.

982438981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 52.

The square root of 982438981 is about 31343.8826727003. The cubic root of 982438981 is about 994.1117232493. Note that the first 3 decimals are identical.

The spelling of 982438981 in words is "nine hundred eighty-two million, four hundred thirty-eight thousand, nine hundred eighty-one".