9438691 has 2 divisors, whose sum is σ = 9438692. Its totient is φ = 9438690.

The previous prime is 9438679. The next prime is 9438697. The reversal of 9438691 is 1968349.

It is a strong prime.

It is an emirp because it is prime and its reverse (1968349) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9438691 - 2⁷ = 9438563 is a prime.

It is not a weakly prime, because it can be changed into another prime (9438697) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4719345 + 4719346.

It is an arithmetic number, because the mean of its divisors is an integer number (4719346).

Almost surely, 2^9438691 is an apocalyptic number.

9438691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9438691 is an equidigital number, since it uses as much as digits as its factorization.

9438691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 9438691 is about 3072.2452701567. The cubic root of 9438691 is about 211.3345918937.

The spelling of 9438691 in words is "nine million, four hundred thirty-eight thousand, six hundred ninety-one".