9908081 has 2 divisors, whose sum is σ = 9908082. Its totient is φ = 9908080.

The previous prime is 9908057. The next prime is 9908089. The reversal of 9908081 is 1808099.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5107600 + 4800481 = 2260^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 9908081 - 2¹⁰ = 9907057 is a prime.

It is a super-2 number, since 2×9908081² = 196340138205122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9908089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954040 + 4954041.

It is an arithmetic number, because the mean of its divisors is an integer number (4954041).

Almost surely, 2^9908081 is an apocalyptic number.

It is an amenable number.

9908081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9908081 is an equidigital number, since it uses as much as digits as its factorization.

9908081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 9908081 is about 3147.7104377627. The cubic root of 9908081 is about 214.7813244435.

The spelling of 9908081 in words is "nine million, nine hundred eight thousand, eighty-one".