9941550197 has 2 divisors, whose sum is σ = 9941550198. Its totient is φ = 9941550196.

The previous prime is 9941550193. The next prime is 9941550211. The reversal of 9941550197 is 7910551499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7149378916 + 2792171281 = 84554^2 + 52841^2 .

It is a cyclic number.

It is not a de Polignac number, because 9941550197 - 2² = 9941550193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9941550193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970775098 + 4970775099.

It is an arithmetic number, because the mean of its divisors is an integer number (4970775099).

Almost surely, 2^9941550197 is an apocalyptic number.

It is an amenable number.

9941550197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9941550197 is an equidigital number, since it uses as much as digits as its factorization.

9941550197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 50.

The square root of 9941550197 is about 99707.3226849463. The cubic root of 9941550197 is about 2150.2289424131.

The spelling of 9941550197 in words is "nine billion, nine hundred forty-one million, five hundred fifty thousand, one hundred ninety-seven".