9986204797 has 2 divisors, whose sum is σ = 9986204798. Its totient is φ = 9986204796.

The previous prime is 9986204783. The next prime is 9986204807. The reversal of 9986204797 is 7974026899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9986204761 + 36 = 99931^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 9986204797 - 2¹¹ = 9986202749 is a prime.

It is a super-2 number, since 2×9986204797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9986204777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993102398 + 4993102399.

It is an arithmetic number, because the mean of its divisors is an integer number (4993102399).

Almost surely, 2^9986204797 is an apocalyptic number.

It is an amenable number.

9986204797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986204797 is an equidigital number, since it uses as much as digits as its factorization.

9986204797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The square root of 9986204797 is about 99931.0001801243. Note that the first 3 decimals coincide. The cubic root of 9986204797 is about 2153.4435386576.

The spelling of 9986204797 in words is "nine billion, nine hundred eighty-six million, two hundred four thousand, seven hundred ninety-seven".