1389001375 has 8 divisors (see below), whose sum is σ = 1733473872. Its totient is φ = 1111201000.

The previous prime is 1389001343. The next prime is 1389001379. The reversal of 1389001375 is 5731009831.

It is a happy number.

It is not a de Polignac number, because 1389001375 - 2⁵ = 1389001343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389001379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5555881 + ... + 5556130.

It is an arithmetic number, because the mean of its divisors is an integer number (216684234).

Almost surely, 2^1389001375 is an apocalyptic number.

1389001375 is a deficient number, since it is larger than the sum of its proper divisors (344472497).

1389001375 is an equidigital number, since it uses as much as digits as its factorization.

1389001375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112026 (or 11112016 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1389001375 is about 37269.3087539868. The cubic root of 1389001375 is about 1115.7517034208.

The spelling of 1389001375 in words is "one billion, three hundred eighty-nine million, one thousand, three hundred seventy-five".