9743989 has 2 divisors, whose sum is σ = 9743990. Its totient is φ = 9743988.

The previous prime is 9743963. The next prime is 9744001. The reversal of 9743989 is 9893479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8803089 + 940900 = 2967^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 9743989 - 2⁷ = 9743861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9743959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4871994 + 4871995.

It is an arithmetic number, because the mean of its divisors is an integer number (4871995).

Almost surely, 2^9743989 is an apocalyptic number.

It is an amenable number.

9743989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9743989 is an equidigital number, since it uses as much as digits as its factorization.

9743989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 9743989 is about 3121.5363204679. The cubic root of 9743989 is about 213.5890225787.

The spelling of 9743989 in words is "nine million, seven hundred forty-three thousand, nine hundred eighty-nine".