383358985 has 4 divisors (see below), whose sum is σ = 460030788. Its totient is φ = 306687184.

The previous prime is 383358977. The next prime is 383359013. The reversal of 383358985 is 589853383.

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 194351481 + 189007504 = 13941^2 + 13748^2 .

It is a cyclic number.

It is not a de Polignac number, because 383358985 - 2³ = 383358977 is a prime.

It is a super-2 number, since 2×383358985² = 293928222760460450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38335894 + ... + 38335903.

It is an arithmetic number, because the mean of its divisors is an integer number (115007697).

Almost surely, 2^383358985 is an apocalyptic number.

It is an amenable number.

383358985 is a deficient number, since it is larger than the sum of its proper divisors (76671803).

383358985 is an equidigital number, since it uses as much as digits as its factorization.

383358985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76671802.

The product of its digits is 3110400, while the sum is 52.

The square root of 383358985 is about 19579.5552809557. Note that the first 3 decimals coincide. The cubic root of 383358985 is about 726.4435668909.

The spelling of 383358985 in words is "three hundred eighty-three million, three hundred fifty-eight thousand, nine hundred eighty-five".