9935381 has 2 divisors, whose sum is σ = 9935382. Its totient is φ = 9935380.

The previous prime is 9935323. The next prime is 9935383. The reversal of 9935381 is 1835399.

9935381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7890481 + 2044900 = 2809^2 + 1430^2 .

It is an emirp because it is prime and its reverse (1835399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9935381 - 2¹⁰ = 9934357 is a prime.

It is a super-2 number, since 2×9935381² = 197423591230322, which contains 22 as substring.

Together with 9935383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9935383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4967690 + 4967691.

It is an arithmetic number, because the mean of its divisors is an integer number (4967691).

Almost surely, 2^9935381 is an apocalyptic number.

It is an amenable number.

9935381 is a deficient number, since it is larger than the sum of its proper divisors (1).

9935381 is an equidigital number, since it uses as much as digits as its factorization.

9935381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 9935381 is about 3152.0439400491. The cubic root of 9935381 is about 214.9784077829.

The spelling of 9935381 in words is "nine million, nine hundred thirty-five thousand, three hundred eighty-one".