965385209 has 2 divisors, whose sum is σ = 965385210. Its totient is φ = 965385208.

The previous prime is 965385173. The next prime is 965385227. The reversal of 965385209 is 902583569.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883753984 + 81631225 = 29728^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 965385209 - 2¹² = 965381113 is a prime.

It is not a weakly prime, because it can be changed into another prime (965385709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482692604 + 482692605.

It is an arithmetic number, because the mean of its divisors is an integer number (482692605).

Almost surely, 2^965385209 is an apocalyptic number.

It is an amenable number.

965385209 is a deficient number, since it is larger than the sum of its proper divisors (1).

965385209 is an equidigital number, since it uses as much as digits as its factorization.

965385209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 965385209 is about 31070.6486736277. The cubic root of 965385209 is about 988.3259840058.

The spelling of 965385209 in words is "nine hundred sixty-five million, three hundred eighty-five thousand, two hundred nine".