385389 has 6 divisors (see below), whose sum is σ = 556686. Its totient is φ = 256920.

The previous prime is 385379. The next prime is 385391. The reversal of 385389 is 983583.

It can be written as a sum of positive squares in only one way, i.e., 233289 + 152100 = 483^2 + 390^2 .

It is not a de Polignac number, because 385389 - 2⁷ = 385261 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 385389.

It is not an unprimeable number, because it can be changed into a prime (385379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21402 + ... + 21419.

It is an arithmetic number, because the mean of its divisors is an integer number (92781).

2³⁸⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

385389 is a deficient number, since it is larger than the sum of its proper divisors (171297).

385389 is a wasteful number, since it uses less digits than its factorization.

385389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42827 (or 42824 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 385389 is about 620.7970682920. The cubic root of 385389 is about 72.7723564691.

The spelling of 385389 in words is "three hundred eighty-five thousand, three hundred eighty-nine".