8969 has 2 divisors, whose sum is σ = 8970. Its totient is φ = 8968.
The previous prime is 8963. The next prime is 8971. The reversal of 8969 is 9698.
It is a happy number.
8969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7744 + 1225 = 88^2 + 35^2 .
It is a cyclic number.
It is not a de Polignac number, because 8969 - 28 = 8713 is a prime.
It is a super-2 number, since 2×89692 = 160885922, which contains 22 as substring.
It is a Sophie Germain prime.
Together with 8971, it forms a pair of twin primes.
It is a Chen prime.
It is an Ulam number.
It is an alternating number because its digits alternate between even and odd.
It is a Curzon number.
It is a plaindrome in base 15.
It is not a weakly prime, because it can be changed into another prime (8963) 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, 4484 + 4485.
It is an arithmetic number, because the mean of its divisors is an integer number (4485).
28969 is an apocalyptic number.
It is an amenable number.
8969 is a deficient number, since it is larger than the sum of its proper divisors (1).
8969 is an equidigital number, since it uses as much as digits as its factorization.
8969 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3888, while the sum is 32.
The square root of 8969 is about 94.7048045244. The cubic root of 8969 is about 20.7769283134.
Subtracting 8969 from its reverse (9698), we obtain a 6-th power (729 = 36).
The spelling of 8969 in words is "eight thousand, nine hundred sixty-nine".
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