1389544 has 32 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 619200.

The previous prime is 1389539. The next prime is 1389547. The reversal of 1389544 is 4459831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389547) 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 7 ways as a sum of consecutive naturals, for example, 3009 + ... + 3439.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^1389544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

1389544 is an abundant number, since it is smaller than the sum of its proper divisors (1513496).

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

1389544 is a wasteful number, since it uses less digits than its factorization.

1389544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 477 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1389544 is about 1178.7892093161. The cubic root of 1389544 is about 111.5896977082.

The spelling of 1389544 in words is "one million, three hundred eighty-nine thousand, five hundred forty-four".