9776881 has 2 divisors, whose sum is σ = 9776882. Its totient is φ = 9776880.

The previous prime is 9776821. The next prime is 9776891. The reversal of 9776881 is 1886779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9096256 + 680625 = 3016^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 9776881 - 2⁹ = 9776369 is a prime.

It is a super-2 number, since 2×9776881² = 191174804176322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9776821) 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, 4888440 + 4888441.

It is an arithmetic number, because the mean of its divisors is an integer number (4888441).

Almost surely, 2^9776881 is an apocalyptic number.

It is an amenable number.

9776881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9776881 is an equidigital number, since it uses as much as digits as its factorization.

9776881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 46.

The square root of 9776881 is about 3126.8004413458. The cubic root of 9776881 is about 213.8290844237.

The spelling of 9776881 in words is "nine million, seven hundred seventy-six thousand, eight hundred eighty-one".