965552989 has 2 divisors, whose sum is σ = 965552990. Its totient is φ = 965552988.

The previous prime is 965552981. The next prime is 965553037. The reversal of 965552989 is 989255569.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956850489 + 8702500 = 30933^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 965552989 - 2³ = 965552981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (965552981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482776494 + 482776495.

It is an arithmetic number, because the mean of its divisors is an integer number (482776495).

Almost surely, 2^965552989 is an apocalyptic number.

It is an amenable number.

965552989 is a deficient number, since it is larger than the sum of its proper divisors (1).

965552989 is an equidigital number, since it uses as much as digits as its factorization.

965552989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748000, while the sum is 58.

The square root of 965552989 is about 31073.3485321425. The cubic root of 965552989 is about 988.3832363602.

The spelling of 965552989 in words is "nine hundred sixty-five million, five hundred fifty-two thousand, nine hundred eighty-nine".