385323689 has 8 divisors (see below), whose sum is σ = 387010440. Its totient is φ = 383641600.

The previous prime is 385323643. The next prime is 385323703. The reversal of 385323689 is 986323583.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 287472025 + 97851664 = 16955^2 + 9892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385323689 - 2²⁰ = 384275113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385323889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325679 + ... + 326859.

It is an arithmetic number, because the mean of its divisors is an integer number (48376305).

Almost surely, 2^385323689 is an apocalyptic number.

It is an amenable number.

385323689 is a deficient number, since it is larger than the sum of its proper divisors (1686751).

385323689 is a wasteful number, since it uses less digits than its factorization.

385323689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its digits is 933120, while the sum is 47.

The square root of 385323689 is about 19629.6634968611. The cubic root of 385323689 is about 727.6824538144.

The spelling of 385323689 in words is "three hundred eighty-five million, three hundred twenty-three thousand, six hundred eighty-nine".