1389522 has 16 divisors (see below), whose sum is σ = 2900160. Its totient is φ = 442992.

The previous prime is 1389511. The next prime is 1389533. The reversal of 1389522 is 2259831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1389511) and next prime (1389533).

It is a d-powerful number, because it can be written as 1 + 3⁹ + 8² + 9⁵ + 5 + 2¹⁸ + 2²⁰ .

It is a self number, because there is not a number n which added to its sum of digits gives 1389522.

It is a congruent number.

It is an unprimeable number.

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, 4897 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (181260).

2^1389522 is an apocalyptic number.

1389522 is an abundant number, since it is smaller than the sum of its proper divisors (1510638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389522 is a wasteful number, since it uses less digits than its factorization.

1389522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097.

The product of its digits is 4320, while the sum is 30.

The square root of 1389522 is about 1178.7798776701. The cubic root of 1389522 is about 111.5891087893.

The spelling of 1389522 in words is "one million, three hundred eighty-nine thousand, five hundred twenty-two".