9281669 has 2 divisors, whose sum is σ = 9281670. Its totient is φ = 9281668.

The previous prime is 9281663. The next prime is 9281689. The reversal of 9281669 is 9661829.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9150625 + 131044 = 3025^2 + 362^2 .

It is an emirp because it is prime and its reverse (9661829) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9281669 - 2¹⁶ = 9216133 is a prime.

It is a super-2 number, since 2×9281669² = 172298758851122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9281663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4640834 + 4640835.

It is an arithmetic number, because the mean of its divisors is an integer number (4640835).

Almost surely, 2^9281669 is an apocalyptic number.

It is an amenable number.

9281669 is a deficient number, since it is larger than the sum of its proper divisors (1).

9281669 is an equidigital number, since it uses as much as digits as its factorization.

9281669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 9281669 is about 3046.5831680753. The cubic root of 9281669 is about 210.1561121879.

The spelling of 9281669 in words is "nine million, two hundred eighty-one thousand, six hundred sixty-nine".