9309661 has 2 divisors, whose sum is σ = 9309662. Its totient is φ = 9309660.

The previous prime is 9309653. The next prime is 9309673. The reversal of 9309661 is 1669039.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 37636 = 3045^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 9309661 - 2³ = 9309653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9309691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4654830 + 4654831.

It is an arithmetic number, because the mean of its divisors is an integer number (4654831).

Almost surely, 2^9309661 is an apocalyptic number.

It is an amenable number.

9309661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9309661 is an equidigital number, since it uses as much as digits as its factorization.

9309661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 9309661 is about 3051.1737085915. The cubic root of 9309661 is about 210.3671656825.

The spelling of 9309661 in words is "nine million, three hundred nine thousand, six hundred sixty-one".