9099661 has 2 divisors, whose sum is σ = 9099662. Its totient is φ = 9099660.

The previous prime is 9099659. The next prime is 9099683. The reversal of 9099661 is 1669909.

9099661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 1454436 = 2765^2 + 1206^2 .

It is a cyclic number.

It is not a de Polignac number, because 9099661 - 2¹ = 9099659 is a prime.

Together with 9099659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9099611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4549830 + 4549831.

It is an arithmetic number, because the mean of its divisors is an integer number (4549831).

Almost surely, 2^9099661 is an apocalyptic number.

It is an amenable number.

9099661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9099661 is an equidigital number, since it uses as much as digits as its factorization.

9099661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 9099661 is about 3016.5644365735. The cubic root of 9099661 is about 208.7733553416.

The spelling of 9099661 in words is "nine million, ninety-nine thousand, six hundred sixty-one".