9841661 has 2 divisors, whose sum is σ = 9841662. Its totient is φ = 9841660.

The previous prime is 9841627. The next prime is 9841693. The reversal of 9841661 is 1661489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9211225 + 630436 = 3035^2 + 794^2 .

It is an emirp because it is prime and its reverse (1661489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9841661 - 2⁶ = 9841597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9841261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920830 + 4920831.

It is an arithmetic number, because the mean of its divisors is an integer number (4920831).

Almost surely, 2^9841661 is an apocalyptic number.

It is an amenable number.

9841661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9841661 is an equidigital number, since it uses as much as digits as its factorization.

9841661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 9841661 is about 3137.1421708300. The cubic root of 9841661 is about 214.3003106036.

The spelling of 9841661 in words is "nine million, eight hundred forty-one thousand, six hundred sixty-one".