9643973 has 2 divisors, whose sum is σ = 9643974. Its totient is φ = 9643972.

The previous prime is 9643961. The next prime is 9644003. The reversal of 9643973 is 3793469.

9643973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7745089 + 1898884 = 2783^2 + 1378^2 .

It is an emirp because it is prime and its reverse (3793469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9643973 - 2¹⁰ = 9642949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9643973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9643903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821986 + 4821987.

It is an arithmetic number, because the mean of its divisors is an integer number (4821987).

Almost surely, 2^9643973 is an apocalyptic number.

It is an amenable number.

9643973 is a deficient number, since it is larger than the sum of its proper divisors (1).

9643973 is an equidigital number, since it uses as much as digits as its factorization.

9643973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 41.

The square root of 9643973 is about 3105.4746819126. The cubic root of 9643973 is about 212.8557216118.

The spelling of 9643973 in words is "nine million, six hundred forty-three thousand, nine hundred seventy-three".