9798881 has 2 divisors, whose sum is σ = 9798882. Its totient is φ = 9798880.

The previous prime is 9798871. The next prime is 9798907. The reversal of 9798881 is 1888979.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9486400 + 312481 = 3080^2 + 559^2 .

It is an emirp because it is prime and its reverse (1888979) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9798881 is a prime.

It is a super-2 number, since 2×9798881² = 192036137704322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9798871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4899440 + 4899441.

It is an arithmetic number, because the mean of its divisors is an integer number (4899441).

Almost surely, 2^9798881 is an apocalyptic number.

It is an amenable number.

9798881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9798881 is an equidigital number, since it uses as much as digits as its factorization.

9798881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 50.

The square root of 9798881 is about 3130.3164376785. The cubic root of 9798881 is about 213.9893507962.

The spelling of 9798881 in words is "nine million, seven hundred ninety-eight thousand, eight hundred eighty-one".