389540 has 12 divisors (see below), whose sum is σ = 818076. Its totient is φ = 155808.

The previous prime is 389539. The next prime is 389561. The reversal of 389540 is 45983.

It can be written as a sum of positive squares in 2 ways, for example, as 209764 + 179776 = 458^2 + 424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9719 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (68173).

2³⁸⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

389540 is an abundant number, since it is smaller than the sum of its proper divisors (428536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389540 is a wasteful number, since it uses less digits than its factorization.

389540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19486 (or 19484 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 389540 is about 624.1313964223. The cubic root of 389540 is about 73.0326994307.

It can be divided in two parts, 389 and 540, that added together give a palindrome (929).

The spelling of 389540 in words is "three hundred eighty-nine thousand, five hundred forty".