385853885 has 4 divisors (see below), whose sum is σ = 463024668. Its totient is φ = 308683104.

The previous prime is 385853849. The next prime is 385853917. The reversal of 385853885 is 588358583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261598276 + 124255609 = 16174^2 + 11147^2 .

It is a cyclic number.

It is not a de Polignac number, because 385853885 - 2¹⁶ = 385788349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38585384 + ... + 38585393.

It is an arithmetic number, because the mean of its divisors is an integer number (115756167).

Almost surely, 2^385853885 is an apocalyptic number.

It is an amenable number.

385853885 is a deficient number, since it is larger than the sum of its proper divisors (77170783).

385853885 is an equidigital number, since it uses as much as digits as its factorization.

385853885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77170782.

The product of its digits is 4608000, while the sum is 53.

The square root of 385853885 is about 19643.1638235799. The cubic root of 385853885 is about 728.0160586211.

The spelling of 385853885 in words is "three hundred eighty-five million, eight hundred fifty-three thousand, eight hundred eighty-five".