963989393 has 2 divisors, whose sum is σ = 963989394. Its totient is φ = 963989392.

The previous prime is 963989371. The next prime is 963989399. The reversal of 963989393 is 393989369.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712195969 + 251793424 = 26687^2 + 15868^2 .

It is an emirp because it is prime and its reverse (393989369) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 963989393 - 2⁶ = 963989329 is a prime.

It is not a weakly prime, because it can be changed into another prime (963989399) 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, 481994696 + 481994697.

It is an arithmetic number, because the mean of its divisors is an integer number (481994697).

Almost surely, 2^963989393 is an apocalyptic number.

It is an amenable number.

963989393 is a deficient number, since it is larger than the sum of its proper divisors (1).

963989393 is an equidigital number, since it uses as much as digits as its factorization.

963989393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8503056, while the sum is 59.

The square root of 963989393 is about 31048.1785778168. The cubic root of 963989393 is about 987.8494258367.

The spelling of 963989393 in words is "nine hundred sixty-three million, nine hundred eighty-nine thousand, three hundred ninety-three".