9799681 has 2 divisors, whose sum is σ = 9799682. Its totient is φ = 9799680.

The previous prime is 9799663. The next prime is 9799693. The reversal of 9799681 is 1869979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 1648656 = 2855^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 9799681 - 2⁹ = 9799169 is a prime.

It is a super-2 number, since 2×9799681² = 192067495403522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9799661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4899840 + 4899841.

It is an arithmetic number, because the mean of its divisors is an integer number (4899841).

Almost surely, 2^9799681 is an apocalyptic number.

It is an amenable number.

9799681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9799681 is an equidigital number, since it uses as much as digits as its factorization.

9799681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 49.

The square root of 9799681 is about 3130.4442176790. Note that the first 3 decimals coincide. The cubic root of 9799681 is about 213.9951741422.

The spelling of 9799681 in words is "nine million, seven hundred ninety-nine thousand, six hundred eighty-one".