9980771 has 2 divisors, whose sum is σ = 9980772. Its totient is φ = 9980770.

The previous prime is 9980749. The next prime is 9980777. The reversal of 9980771 is 1770899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9980771 is a prime.

It is not a weakly prime, because it can be changed into another prime (9980777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990385 + 4990386.

It is an arithmetic number, because the mean of its divisors is an integer number (4990386).

Almost surely, 2^9980771 is an apocalyptic number.

9980771 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980771 is an equidigital number, since it uses as much as digits as its factorization.

9980771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9980771 is about 3159.2358253223. The cubic root of 9980771 is about 215.3052883139.

The spelling of 9980771 in words is "nine million, nine hundred eighty thousand, seven hundred seventy-one".