9850354991 has 2 divisors, whose sum is σ = 9850354992. Its totient is φ = 9850354990.

The previous prime is 9850354973. The next prime is 9850354993. The reversal of 9850354991 is 1994530589.

It is a happy number.

9850354991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9850354991 - 2¹⁴ = 9850338607 is a prime.

It is a super-2 number, since 2×9850354991² (a number of 21 digits) contains 22 as substring.

Together with 9850354993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9850354993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4925177495 + 4925177496.

It is an arithmetic number, because the mean of its divisors is an integer number (4925177496).

Almost surely, 2^9850354991 is an apocalyptic number.

9850354991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9850354991 is an equidigital number, since it uses as much as digits as its factorization.

9850354991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The square root of 9850354991 is about 99248.9546091041. The cubic root of 9850354991 is about 2143.6339536884.

The spelling of 9850354991 in words is "nine billion, eight hundred fifty million, three hundred fifty-four thousand, nine hundred ninety-one".