9389381 has 2 divisors, whose sum is σ = 9389382. Its totient is φ = 9389380.

The previous prime is 9389353. The next prime is 9389383. The reversal of 9389381 is 1839839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 538756 = 2975^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 9389381 - 2²² = 5195077 is a prime.

It is a super-2 number, since 2×9389381² = 176320951126322, which contains 22 as substring.

Together with 9389383, 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 (9389383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4694690 + 4694691.

It is an arithmetic number, because the mean of its divisors is an integer number (4694691).

Almost surely, 2^9389381 is an apocalyptic number.

It is an amenable number.

9389381 is a deficient number, since it is larger than the sum of its proper divisors (1).

9389381 is an equidigital number, since it uses as much as digits as its factorization.

9389381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 9389381 is about 3064.2096860365. The cubic root of 9389381 is about 210.9659281777.

The spelling of 9389381 in words is "nine million, three hundred eighty-nine thousand, three hundred eighty-one".