389005115 has 4 divisors (see below), whose sum is σ = 466806144. Its totient is φ = 311204088.

The previous prime is 389005109. The next prime is 389005117. The reversal of 389005115 is 511500983.

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

It is a cyclic number.

It is not a de Polignac number, because 389005115 - 2²⁰ = 387956539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389005117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38900507 + ... + 38900516.

It is an arithmetic number, because the mean of its divisors is an integer number (116701536).

Almost surely, 2^389005115 is an apocalyptic number.

389005115 is a deficient number, since it is larger than the sum of its proper divisors (77801029).

389005115 is an equidigital number, since it uses as much as digits as its factorization.

389005115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77801028.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 389005115 is about 19723.2125932871. The cubic root of 389005115 is about 729.9925657590.

The spelling of 389005115 in words is "three hundred eighty-nine million, five thousand, one hundred fifteen".