947395901 has 2 divisors, whose sum is σ = 947395902. Its totient is φ = 947395900.

The previous prime is 947395859. The next prime is 947395919. The reversal of 947395901 is 109593749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829152025 + 118243876 = 28795^2 + 10874^2 .

It is an emirp because it is prime and its reverse (109593749) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947395901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947395931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473697950 + 473697951.

It is an arithmetic number, because the mean of its divisors is an integer number (473697951).

Almost surely, 2^947395901 is an apocalyptic number.

It is an amenable number.

947395901 is a deficient number, since it is larger than the sum of its proper divisors (1).

947395901 is an equidigital number, since it uses as much as digits as its factorization.

947395901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 947395901 is about 30779.7969616435. The cubic root of 947395901 is about 982.1485213172.

The spelling of 947395901 in words is "nine hundred forty-seven million, three hundred ninety-five thousand, nine hundred one".