1389125 has 8 divisors (see below), whose sum is σ = 1733784. Its totient is φ = 1111200.

The previous prime is 1389107. The next prime is 1389133. The reversal of 1389125 is 5219831.

It can be written as a sum of positive squares in 4 ways, for example, as 407044 + 982081 = 638^2 + 991^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1389125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5432 + ... + 5681.

It is an arithmetic number, because the mean of its divisors is an integer number (216723).

2^1389125 is an apocalyptic number.

It is an amenable number.

1389125 is a deficient number, since it is larger than the sum of its proper divisors (344659).

1389125 is an equidigital number, since it uses as much as digits as its factorization.

1389125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11128 (or 11118 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 1389125 is about 1178.6114711812. The cubic root of 1389125 is about 111.5784804111.

The spelling of 1389125 in words is "one million, three hundred eighty-nine thousand, one hundred twenty-five".