9388661 has 2 divisors, whose sum is σ = 9388662. Its totient is φ = 9388660.

The previous prime is 9388619. The next prime is 9388667. The reversal of 9388661 is 1668839.

It is a happy number.

9388661 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., 6599761 + 2788900 = 2569^2 + 1670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9388661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9388667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4694330 + 4694331.

It is an arithmetic number, because the mean of its divisors is an integer number (4694331).

Almost surely, 2^9388661 is an apocalyptic number.

It is an amenable number.

9388661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9388661 is an equidigital number, since it uses as much as digits as its factorization.

9388661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 9388661 is about 3064.0921983517. The cubic root of 9388661 is about 210.9605355840.

The spelling of 9388661 in words is "nine million, three hundred eighty-eight thousand, six hundred sixty-one".