9888961 has 2 divisors, whose sum is σ = 9888962. Its totient is φ = 9888960.

The previous prime is 9888947. The next prime is 9888973. The reversal of 9888961 is 1698889.

It is a happy number.

9888961 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 can be written as a sum of positive squares in only one way, i.e., 9884736 + 4225 = 3144^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 9888961 - 2⁵ = 9888929 is a prime.

It is not a weakly prime, because it can be changed into another prime (9888661) 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, 4944480 + 4944481.

It is an arithmetic number, because the mean of its divisors is an integer number (4944481).

Almost surely, 2^9888961 is an apocalyptic number.

It is an amenable number.

9888961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9888961 is an equidigital number, since it uses as much as digits as its factorization.

9888961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 49.

The square root of 9888961 is about 3144.6718429750. The cubic root of 9888961 is about 214.6430782542.

It can be divided in two parts, 98 and 88961, that multiplied together give a palindrome (8718178).

The spelling of 9888961 in words is "nine million, eight hundred eighty-eight thousand, nine hundred sixty-one".