385478473 has 2 divisors, whose sum is σ = 385478474. Its totient is φ = 385478472.

The previous prime is 385478453. The next prime is 385478501. The reversal of 385478473 is 374874583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383650569 + 1827904 = 19587^2 + 1352^2 .

It is an emirp because it is prime and its reverse (374874583) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385478473 is a prime.

It is not a weakly prime, because it can be changed into another prime (385478453) 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, 192739236 + 192739237.

It is an arithmetic number, because the mean of its divisors is an integer number (192739237).

Almost surely, 2^385478473 is an apocalyptic number.

It is an amenable number.

385478473 is a deficient number, since it is larger than the sum of its proper divisors (1).

385478473 is an equidigital number, since it uses as much as digits as its factorization.

385478473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 49.

The square root of 385478473 is about 19633.6057055244. The cubic root of 385478473 is about 727.7798771202.

The spelling of 385478473 in words is "three hundred eighty-five million, four hundred seventy-eight thousand, four hundred seventy-three".