9343778989 has 2 divisors, whose sum is σ = 9343778990. Its totient is φ = 9343778988.

The previous prime is 9343778971. The next prime is 9343778993. The reversal of 9343778989 is 9898773439.

9343778989 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., 9342768964 + 1010025 = 96658^2 + 1005^2 .

It is a cyclic number.

It is not a de Polignac number, because 9343778989 - 2⁷ = 9343778861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9343772989) 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, 4671889494 + 4671889495.

It is an arithmetic number, because the mean of its divisors is an integer number (4671889495).

Almost surely, 2^9343778989 is an apocalyptic number.

It is an amenable number.

9343778989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9343778989 is an equidigital number, since it uses as much as digits as its factorization.

9343778989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 67.

The square root of 9343778989 is about 96663.2245944651. The cubic root of 9343778989 is about 2106.2383649191.

The spelling of 9343778989 in words is "nine billion, three hundred forty-three million, seven hundred seventy-eight thousand, nine hundred eighty-nine".