1389344 has 24 divisors (see below), whose sum is σ = 2984688. Its totient is φ = 631360.

The previous prime is 1389329. The next prime is 1389347. The reversal of 1389344 is 4439831.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1389344.

It is not an unprimeable number, because it can be changed into a prime (1389347) 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, 1622 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (124362).

2^1389344 is an apocalyptic number.

It is an amenable number.

1389344 is an abundant number, since it is smaller than the sum of its proper divisors (1595344).

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

1389344 is a wasteful number, since it uses less digits than its factorization.

1389344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968 (or 3960 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1389344 is about 1178.7043734542. The cubic root of 1389344 is about 111.5843436711.

The spelling of 1389344 in words is "one million, three hundred eighty-nine thousand, three hundred forty-four".