1385889 has 8 divisors (see below), whose sum is σ = 1887360. Its totient is φ = 904176.

The previous prime is 1385887. The next prime is 1385893. The reversal of 1385889 is 9885831.

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

It is not a de Polignac number, because 1385889 - 2¹ = 1385887 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1385889.

It is not an unprimeable number, because it can be changed into a prime (1385887) 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, 4774 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (235920).

2^1385889 is an apocalyptic number.

It is an amenable number.

1385889 is a deficient number, since it is larger than the sum of its proper divisors (501471).

1385889 is an equidigital number, since it uses as much as digits as its factorization.

1385889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9879.

The product of its digits is 69120, while the sum is 42.

The square root of 1385889 is about 1177.2378689118. The cubic root of 1385889 is about 111.4917714641.

The spelling of 1385889 in words is "one million, three hundred eighty-five thousand, eight hundred eighty-nine".