385538717 has 2 divisors, whose sum is σ = 385538718. Its totient is φ = 385538716.

The previous prime is 385538701. The next prime is 385538729. The reversal of 385538717 is 717835583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300640921 + 84897796 = 17339^2 + 9214^2 .

It is a cyclic number.

It is not a de Polignac number, because 385538717 - 2⁴ = 385538701 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 (385538737) 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, 192769358 + 192769359.

It is an arithmetic number, because the mean of its divisors is an integer number (192769359).

Almost surely, 2^385538717 is an apocalyptic number.

It is an amenable number.

385538717 is a deficient number, since it is larger than the sum of its proper divisors (1).

385538717 is an equidigital number, since it uses as much as digits as its factorization.

385538717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 47.

The square root of 385538717 is about 19635.1398518065. The cubic root of 385538717 is about 727.8177885213.

The spelling of 385538717 in words is "three hundred eighty-five million, five hundred thirty-eight thousand, seven hundred seventeen".