1389832 has 8 divisors (see below), whose sum is σ = 2605950. Its totient is φ = 694912.

The previous prime is 1389811. The next prime is 1389833. The reversal of 1389832 is 2389831.

It can be written as a sum of positive squares in only one way, i.e., 1359556 + 30276 = 1166^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1389833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86857 + ... + 86872.

2^1389832 is an apocalyptic number.

It is an amenable number.

1389832 is a deficient number, since it is larger than the sum of its proper divisors (1216118).

1389832 is a wasteful number, since it uses less digits than its factorization.

1389832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173735 (or 173731 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 1389832 is about 1178.9113622321. The cubic root of 1389832 is about 111.5974066192.

Subtracting 1389832 from its reverse (2389831), we obtain a palindrome (999999).

The spelling of 1389832 in words is "one million, three hundred eighty-nine thousand, eight hundred thirty-two".