947458787369 has 2 divisors, whose sum is σ = 947458787370. Its totient is φ = 947458787368.

The previous prime is 947458787279. The next prime is 947458787371. The reversal of 947458787369 is 963787854749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514968417769 + 432490369600 = 717613^2 + 657640^2 .

It is a cyclic number.

It is not a de Polignac number, because 947458787369 - 2¹² = 947458783273 is a prime.

It is a super-2 number, since 2×947458787369² (a number of 25 digits) contains 22 as substring.

Together with 947458787371, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947458787369.

It is not a weakly prime, because it can be changed into another prime (947458787969) 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, 473729393684 + 473729393685.

It is an arithmetic number, because the mean of its divisors is an integer number (473729393685).

Almost surely, 2^947458787369 is an apocalyptic number.

It is an amenable number.

947458787369 is a deficient number, since it is larger than the sum of its proper divisors (1).

947458787369 is an equidigital number, since it uses as much as digits as its factorization.

947458787369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560481280, while the sum is 77.

The spelling of 947458787369 in words is "nine hundred forty-seven billion, four hundred fifty-eight million, seven hundred eighty-seven thousand, three hundred sixty-nine".