963947321 has 2 divisors, whose sum is σ = 963947322. Its totient is φ = 963947320.

The previous prime is 963947287. The next prime is 963947323. The reversal of 963947321 is 123749369.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 963233296 + 714025 = 31036^2 + 845^2 .

It is an emirp because it is prime and its reverse (123749369) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 963947321 - 2¹⁰ = 963946297 is a prime.

Together with 963947323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (963947323) 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, 481973660 + 481973661.

It is an arithmetic number, because the mean of its divisors is an integer number (481973661).

Almost surely, 2^963947321 is an apocalyptic number.

It is an amenable number.

963947321 is a deficient number, since it is larger than the sum of its proper divisors (1).

963947321 is an equidigital number, since it uses as much as digits as its factorization.

963947321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 963947321 is about 31047.5010427570. The cubic root of 963947321 is about 987.8350545148.

The spelling of 963947321 in words is "nine hundred sixty-three million, nine hundred forty-seven thousand, three hundred twenty-one".