9997783 has 2 divisors, whose sum is σ = 9997784. Its totient is φ = 9997782.

The previous prime is 9997777. The next prime is 9997787. The reversal of 9997783 is 3877999.

9997783 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (3877999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9997783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9997787) 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, 4998891 + 4998892.

It is an arithmetic number, because the mean of its divisors is an integer number (4998892).

Almost surely, 2^9997783 is an apocalyptic number.

9997783 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997783 is an equidigital number, since it uses as much as digits as its factorization.

9997783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 9997783 is about 3161.9271022590. The cubic root of 9997783 is about 215.4275465541.

The spelling of 9997783 in words is "nine million, nine hundred ninety-seven thousand, seven hundred eighty-three".