387189 has 12 divisors (see below), whose sum is σ = 610272. Its totient is φ = 234600.

The previous prime is 387187. The next prime is 387197. The reversal of 387189 is 981783.

It is not a de Polignac number, because 387189 - 2¹ = 387187 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387187) 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 11 ways as a sum of consecutive naturals, for example, 1857 + ... + 2054.

It is an arithmetic number, because the mean of its divisors is an integer number (50856).

2³⁸⁷¹⁸⁹ is an apocalyptic number.

It is an amenable number.

387189 is a deficient number, since it is larger than the sum of its proper divisors (223083).

387189 is a wasteful number, since it uses less digits than its factorization.

387189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928 (or 3925 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 387189 is about 622.2451285466. The cubic root of 387189 is about 72.8854775274.

It can be divided in two parts, 387 and 189, that added together give a square (576 = 24²).

The spelling of 387189 in words is "three hundred eighty-seven thousand, one hundred eighty-nine".