385508873 has 2 divisors, whose sum is σ = 385508874. Its totient is φ = 385508872.

The previous prime is 385508869. The next prime is 385508897. The reversal of 385508873 is 378805583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224041024 + 161467849 = 14968^2 + 12707^2 .

It is a cyclic number.

It is not a de Polignac number, because 385508873 - 2² = 385508869 is a prime.

It is not a weakly prime, because it can be changed into another prime (385508833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192754436 + 192754437.

It is an arithmetic number, because the mean of its divisors is an integer number (192754437).

Almost surely, 2^385508873 is an apocalyptic number.

It is an amenable number.

385508873 is a deficient number, since it is larger than the sum of its proper divisors (1).

385508873 is an equidigital number, since it uses as much as digits as its factorization.

385508873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 385508873 is about 19634.3798730696. The cubic root of 385508873 is about 727.7990082591.

The spelling of 385508873 in words is "three hundred eighty-five million, five hundred eight thousand, eight hundred seventy-three".