1389475 has 6 divisors (see below), whose sum is σ = 1722980. Its totient is φ = 1111560.

The previous prime is 1389473. The next prime is 1389481. The reversal of 1389475 is 5749831.

It is not a de Polignac number, because 1389475 - 2¹ = 1389473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1389473) 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 5 ways as a sum of consecutive naturals, for example, 27765 + ... + 27814.

2^1389475 is an apocalyptic number.

1389475 is a deficient number, since it is larger than the sum of its proper divisors (333505).

1389475 is an equidigital number, since it uses as much as digits as its factorization.

1389475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55589 (or 55584 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 1389475 is about 1178.7599416336. The cubic root of 1389475 is about 111.5878506235.

The spelling of 1389475 in words is "one million, three hundred eighty-nine thousand, four hundred seventy-five".