9808081 has 4 divisors (see below), whose sum is σ = 9814372. Its totient is φ = 9801792.

The previous prime is 9808069. The next prime is 9808091. The reversal of 9808081 is 1808089.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 4879681 = 2220^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 9808081 - 2⁷ = 9807953 is a prime.

It is a super-2 number, since 2×9808081² = 192396905805122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9808091) 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 in 3 ways as a sum of consecutive naturals, for example, 1141 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (2453593).

Almost surely, 2^9808081 is an apocalyptic number.

It is an amenable number.

9808081 is a deficient number, since it is larger than the sum of its proper divisors (6291).

9808081 is a wasteful number, since it uses less digits than its factorization.

9808081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 9808081 is about 3131.7855929166. The cubic root of 9808081 is about 214.0563001490.

The spelling of 9808081 in words is "nine million, eight hundred eight thousand, eighty-one".