965012809 has 2 divisors, whose sum is σ = 965012810. Its totient is φ = 965012808.

The previous prime is 965012779. The next prime is 965012813. The reversal of 965012809 is 908210569.

965012809 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., 602948025 + 362064784 = 24555^2 + 19028^2 .

It is a cyclic number.

It is not a de Polignac number, because 965012809 - 2¹⁹ = 964488521 is a prime.

It is not a weakly prime, because it can be changed into another prime (965012309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482506404 + 482506405.

It is an arithmetic number, because the mean of its divisors is an integer number (482506405).

Almost surely, 2^965012809 is an apocalyptic number.

It is an amenable number.

965012809 is a deficient number, since it is larger than the sum of its proper divisors (1).

965012809 is an equidigital number, since it uses as much as digits as its factorization.

965012809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 965012809 is about 31064.6553014837. The cubic root of 965012809 is about 988.1988845058.

The spelling of 965012809 in words is "nine hundred sixty-five million, twelve thousand, eight hundred nine".