1389535 has 24 divisors (see below), whose sum is σ = 2026080. Its totient is φ = 895104.

The previous prime is 1389533. The next prime is 1389539. The reversal of 1389535 is 5359831.

It is not a de Polignac number, because 1389535 - 2¹ = 1389533 is a prime.

1389535 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37537 + ... + 37573.

It is an arithmetic number, because the mean of its divisors is an integer number (84420).

2^1389535 is an apocalyptic number.

1389535 is a deficient number, since it is larger than the sum of its proper divisors (636545).

1389535 is an equidigital number, since it uses as much as digits as its factorization.

1389535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 78 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 1389535 is about 1178.7853918335. The cubic root of 1389535 is about 111.5894567876.

The spelling of 1389535 in words is "one million, three hundred eighty-nine thousand, five hundred thirty-five".