385487873 has 2 divisors, whose sum is σ = 385487874. Its totient is φ = 385487872.

The previous prime is 385487849. The next prime is 385487933. The reversal of 385487873 is 378784583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342546064 + 42941809 = 18508^2 + 6553^2 .

It is an emirp because it is prime and its reverse (378784583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385487873 - 2²² = 381293569 is a prime.

It is not a weakly prime, because it can be changed into another prime (385487803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192743936 + 192743937.

It is an arithmetic number, because the mean of its divisors is an integer number (192743937).

Almost surely, 2^385487873 is an apocalyptic number.

It is an amenable number.

385487873 is a deficient number, since it is larger than the sum of its proper divisors (1).

385487873 is an equidigital number, since it uses as much as digits as its factorization.

385487873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 53.

The square root of 385487873 is about 19633.8450895386. The cubic root of 385487873 is about 727.7857927771.

The spelling of 385487873 in words is "three hundred eighty-five million, four hundred eighty-seven thousand, eight hundred seventy-three".