9071947901 has 2 divisors, whose sum is σ = 9071947902. Its totient is φ = 9071947900.

The previous prime is 9071947889. The next prime is 9071947903. The reversal of 9071947901 is 1097491709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9048955876 + 22992025 = 95126^2 + 4795^2 .

It is a cyclic number.

It is not a de Polignac number, because 9071947901 - 2⁶ = 9071947837 is a prime.

Together with 9071947903, 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 (9071947903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535973950 + 4535973951.

It is an arithmetic number, because the mean of its divisors is an integer number (4535973951).

Almost surely, 2^9071947901 is an apocalyptic number.

It is an amenable number.

9071947901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9071947901 is an equidigital number, since it uses as much as digits as its factorization.

9071947901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 9071947901 is about 95246.7737038898. The cubic root of 9071947901 is about 2085.6119944747.

The spelling of 9071947901 in words is "nine billion, seventy-one million, nine hundred forty-seven thousand, nine hundred one".