8945669 has 2 divisors, whose sum is σ = 8945670. Its totient is φ = 8945668.

The previous prime is 8945663. The next prime is 8945683. The reversal of 8945669 is 9665498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8773444 + 172225 = 2962^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 8945669 - 2¹² = 8941573 is a prime.

It is a super-2 number, since 2×8945669² = 160049987715122, 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 (8945663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4472834 + 4472835.

It is an arithmetic number, because the mean of its divisors is an integer number (4472835).

Almost surely, 2^8945669 is an apocalyptic number.

It is an amenable number.

8945669 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945669 is an equidigital number, since it uses as much as digits as its factorization.

8945669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 8945669 is about 2990.9311259205. The cubic root of 8945669 is about 207.5889704108.

The spelling of 8945669 in words is "eight million, nine hundred forty-five thousand, six hundred sixty-nine".