385849517 has 2 divisors, whose sum is σ = 385849518. Its totient is φ = 385849516.

The previous prime is 385849481. The next prime is 385849523. The reversal of 385849517 is 715948583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251729956 + 134119561 = 15866^2 + 11581^2 .

It is a cyclic number.

It is not a de Polignac number, because 385849517 - 2²² = 381655213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385849537) 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, 192924758 + 192924759.

It is an arithmetic number, because the mean of its divisors is an integer number (192924759).

Almost surely, 2^385849517 is an apocalyptic number.

It is an amenable number.

385849517 is a deficient number, since it is larger than the sum of its proper divisors (1).

385849517 is an equidigital number, since it uses as much as digits as its factorization.

385849517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 385849517 is about 19643.0526395466. The cubic root of 385849517 is about 728.0133114792.

The spelling of 385849517 in words is "three hundred eighty-five million, eight hundred forty-nine thousand, five hundred seventeen".