9781073 has 2 divisors, whose sum is σ = 9781074. Its totient is φ = 9781072.

The previous prime is 9781063. The next prime is 9781099. The reversal of 9781073 is 3701879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9412624 + 368449 = 3068^2 + 607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9781073 is a prime.

It is not a weakly prime, because it can be changed into another prime (9781043) 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, 4890536 + 4890537.

It is an arithmetic number, because the mean of its divisors is an integer number (4890537).

Almost surely, 2^9781073 is an apocalyptic number.

It is an amenable number.

9781073 is a deficient number, since it is larger than the sum of its proper divisors (1).

9781073 is an equidigital number, since it uses as much as digits as its factorization.

9781073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 9781073 is about 3127.4707033000. The cubic root of 9781073 is about 213.8596409799.

The spelling of 9781073 in words is "nine million, seven hundred eighty-one thousand, seventy-three".