968589509 has 2 divisors, whose sum is σ = 968589510. Its totient is φ = 968589508.

The previous prime is 968589497. The next prime is 968589511. The reversal of 968589509 is 905985869.

968589509 is digitally balanced in base 2, 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., 962364484 + 6225025 = 31022^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 968589509 - 2⁴ = 968589493 is a prime.

It is a super-2 number, since 2×968589509² = 1876331273889722162, which contains 22 as substring.

Together with 968589511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968589529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484294754 + 484294755.

It is an arithmetic number, because the mean of its divisors is an integer number (484294755).

Almost surely, 2^968589509 is an apocalyptic number.

It is an amenable number.

968589509 is a deficient number, since it is larger than the sum of its proper divisors (1).

968589509 is an equidigital number, since it uses as much as digits as its factorization.

968589509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 59.

The square root of 968589509 is about 31122.1706987157. The cubic root of 968589509 is about 989.4182580276.

The spelling of 968589509 in words is "nine hundred sixty-eight million, five hundred eighty-nine thousand, five hundred nine".