1389875 has 8 divisors (see below), whose sum is σ = 1734720. Its totient is φ = 1111800.

The previous prime is 1389853. The next prime is 1389877. The reversal of 1389875 is 5789831.

It is a happy number.

It is not a de Polignac number, because 1389875 - 2⁶ = 1389811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1389877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5435 + ... + 5684.

It is an arithmetic number, because the mean of its divisors is an integer number (216840).

2^1389875 is an apocalyptic number.

1389875 is a deficient number, since it is larger than the sum of its proper divisors (344845).

1389875 is an equidigital number, since it uses as much as digits as its factorization.

1389875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134 (or 11124 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1389875 is about 1178.9295992552. The cubic root of 1389875 is about 111.5985575110.

The spelling of 1389875 in words is "one million, three hundred eighty-nine thousand, eight hundred seventy-five".