9983977 has 2 divisors, whose sum is σ = 9983978. Its totient is φ = 9983976.

The previous prime is 9983971. The next prime is 9983983. The reversal of 9983977 is 7793899.

It is a balanced prime because it is at equal distance from previous prime (9983971) and next prime (9983983).

It can be written as a sum of positive squares in only one way, i.e., 9665881 + 318096 = 3109^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 9983977 - 2¹¹ = 9981929 is a prime.

9983977 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9983971) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991988 + 4991989.

It is an arithmetic number, because the mean of its divisors is an integer number (4991989).

Almost surely, 2^9983977 is an apocalyptic number.

It is an amenable number.

9983977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983977 is an equidigital number, since it uses as much as digits as its factorization.

9983977 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 9983977 is about 3159.7431857668. The cubic root of 9983977 is about 215.3283391336.

The spelling of 9983977 in words is "nine million, nine hundred eighty-three thousand, nine hundred seventy-seven".