982939871393 has 2 divisors, whose sum is σ = 982939871394. Its totient is φ = 982939871392.

The previous prime is 982939871351. The next prime is 982939871423. The reversal of 982939871393 is 393178939289.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845897754529 + 137042116864 = 919727^2 + 370192^2 .

It is a cyclic number.

It is not a de Polignac number, because 982939871393 - 2²² = 982935677089 is a prime.

It is not a weakly prime, because it can be changed into another prime (982939871593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491469935696 + 491469935697.

It is an arithmetic number, because the mean of its divisors is an integer number (491469935697).

Almost surely, 2^982939871393 is an apocalyptic number.

It is an amenable number.

982939871393 is a deficient number, since it is larger than the sum of its proper divisors (1).

982939871393 is an equidigital number, since it uses as much as digits as its factorization.

982939871393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158723712, while the sum is 71.

The spelling of 982939871393 in words is "nine hundred eighty-two billion, nine hundred thirty-nine million, eight hundred seventy-one thousand, three hundred ninety-three".