9908881 has 2 divisors, whose sum is σ = 9908882. Its totient is φ = 9908880.

The previous prime is 9908867. The next prime is 9908887. The reversal of 9908881 is 1888099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 80656 = 3135^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 9908881 - 2⁷ = 9908753 is a prime.

It is a super-2 number, since 2×9908881² = 196371845344322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9908887) 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, 4954440 + 4954441.

It is an arithmetic number, because the mean of its divisors is an integer number (4954441).

Almost surely, 2^9908881 is an apocalyptic number.

It is an amenable number.

9908881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9908881 is an equidigital number, since it uses as much as digits as its factorization.

9908881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 9908881 is about 3147.8375116896. The cubic root of 9908881 is about 214.7871049250.

The spelling of 9908881 in words is "nine million, nine hundred eight thousand, eight hundred eighty-one".