389145 has 8 divisors (see below), whose sum is σ = 622656. Its totient is φ = 207536.

The previous prime is 389141. The next prime is 389149. The reversal of 389145 is 541983.

It is an interprime number because it is at equal distance from previous prime (389141) and next prime (389149).

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 389145 - 2² = 389141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12957 + ... + 12986.

It is an arithmetic number, because the mean of its divisors is an integer number (77832).

2³⁸⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

389145 is a deficient number, since it is larger than the sum of its proper divisors (233511).

389145 is a wasteful number, since it uses less digits than its factorization.

389145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25951.

The product of its digits is 4320, while the sum is 30.

The square root of 389145 is about 623.8148763856. The cubic root of 389145 is about 73.0080056273.

The spelling of 389145 in words is "three hundred eighty-nine thousand, one hundred forty-five".