1389844 has 12 divisors (see below), whose sum is σ = 2538144. Its totient is φ = 664664.

The previous prime is 1389841. The next prime is 1389851. The reversal of 1389844 is 4489831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7462 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (211512).

2^1389844 is an apocalyptic number.

It is an amenable number.

1389844 is a deficient number, since it is larger than the sum of its proper divisors (1148300).

1389844 is a wasteful number, since it uses less digits than its factorization.

1389844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15134 (or 15132 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 1389844 is about 1178.9164516623. The cubic root of 1389844 is about 111.5977278007.

The spelling of 1389844 in words is "one million, three hundred eighty-nine thousand, eight hundred forty-four".