1389129 has 16 divisors (see below), whose sum is σ = 2190720. Its totient is φ = 766080.

The previous prime is 1389107. The next prime is 1389133. The reversal of 1389129 is 9219831.

It is not a de Polignac number, because 1389129 - 2⁵ = 1389097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1389129.

It is not an unprimeable number, because it can be changed into a prime (1389139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532 + ... + 1749.

It is an arithmetic number, because the mean of its divisors is an integer number (136920).

2^1389129 is an apocalyptic number.

It is an amenable number.

1389129 is a deficient number, since it is larger than the sum of its proper divisors (801591).

1389129 is a wasteful number, since it uses less digits than its factorization.

1389129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its digits is 3888, while the sum is 33.

The square root of 1389129 is about 1178.6131680921. The cubic root of 1389129 is about 111.5785875081.

The spelling of 1389129 in words is "one million, three hundred eighty-nine thousand, one hundred twenty-nine".