385448717 has 2 divisors, whose sum is σ = 385448718. Its totient is φ = 385448716.

The previous prime is 385448669. The next prime is 385448729. The reversal of 385448717 is 717844583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193376836 + 192071881 = 13906^2 + 13859^2 .

It is a cyclic number.

It is not a de Polignac number, because 385448717 - 2⁶ = 385448653 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 (385448737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192724358 + 192724359.

It is an arithmetic number, because the mean of its divisors is an integer number (192724359).

Almost surely, 2^385448717 is an apocalyptic number.

It is an amenable number.

385448717 is a deficient number, since it is larger than the sum of its proper divisors (1).

385448717 is an equidigital number, since it uses as much as digits as its factorization.

385448717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 47.

The square root of 385448717 is about 19632.8479085435. The cubic root of 385448717 is about 727.7611502852.

The spelling of 385448717 in words is "three hundred eighty-five million, four hundred forty-eight thousand, seven hundred seventeen".