9838981 has 2 divisors, whose sum is σ = 9838982. Its totient is φ = 9838980.

The previous prime is 9838951. The next prime is 9838987. The reversal of 9838981 is 1898389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 1018081 = 2970^2 + 1009^2 .

It is an emirp because it is prime and its reverse (1898389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9838981 - 2⁷ = 9838853 is a prime.

It is a super-2 number, since 2×9838981² = 193611094236722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9838987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4919490 + 4919491.

It is an arithmetic number, because the mean of its divisors is an integer number (4919491).

Almost surely, 2^9838981 is an apocalyptic number.

It is an amenable number.

9838981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9838981 is an equidigital number, since it uses as much as digits as its factorization.

9838981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 46.

The square root of 9838981 is about 3136.7150013988. The cubic root of 9838981 is about 214.2808566730.

The spelling of 9838981 in words is "nine million, eight hundred thirty-eight thousand, nine hundred eighty-one".