965989 has 2 divisors, whose sum is σ = 965990. Its totient is φ = 965988.

The previous prime is 965983. The next prime is 966011. The reversal of 965989 is 989569.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792100 + 173889 = 890^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 965989 - 2¹⁵ = 933221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (965983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482994 + 482995.

It is an arithmetic number, because the mean of its divisors is an integer number (482995).

2⁹⁶⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

965989 is a deficient number, since it is larger than the sum of its proper divisors (1).

965989 is an equidigital number, since it uses as much as digits as its factorization.

965989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 46.

The square root of 965989 is about 982.8473940546. The cubic root of 965989 is about 98.8531987427.

The spelling of 965989 in words is "nine hundred sixty-five thousand, nine hundred eighty-nine".