9839090197 has 2 divisors, whose sum is σ = 9839090198. Its totient is φ = 9839090196.

The previous prime is 9839090147. The next prime is 9839090267. The reversal of 9839090197 is 7910909389.

9839090197 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7802012241 + 2037077956 = 88329^2 + 45134^2 .

It is a cyclic number.

It is not a de Polignac number, because 9839090197 - 2¹⁹ = 9838565909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9839090147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4919545098 + 4919545099.

It is an arithmetic number, because the mean of its divisors is an integer number (4919545099).

Almost surely, 2^9839090197 is an apocalyptic number.

It is an amenable number.

9839090197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9839090197 is an equidigital number, since it uses as much as digits as its factorization.

9839090197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 9839090197 is about 99192.1881853606. The cubic root of 9839090197 is about 2142.8164939529.

The spelling of 9839090197 in words is "nine billion, eight hundred thirty-nine million, ninety thousand, one hundred ninety-seven".