385858585 has 48 divisors (see below), whose sum is σ = 558472320. Its totient is φ = 255010560.

The previous prime is 385858573. The next prime is 385858589. The reversal of 385858585 is 585858583.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-385858585 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (385858589) 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 in 47 ways as a sum of consecutive naturals, for example, 1074636 + ... + 1074994.

It is an arithmetic number, because the mean of its divisors is an integer number (11634840).

Almost surely, 2^385858585 is an apocalyptic number.

385858585 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

385858585 is a deficient number, since it is larger than the sum of its proper divisors (172613735).

385858585 is a wasteful number, since it uses less digits than its factorization.

385858585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 519 counting only the distinct ones).

The product of its digits is 7680000, while the sum is 55.

The square root of 385858585 is about 19643.2834577114. The cubic root of 385858585 is about 728.0190145428.

The spelling of 385858585 in words is "three hundred eighty-five million, eight hundred fifty-eight thousand, five hundred eighty-five".