1389565 has 8 divisors (see below), whose sum is σ = 1755360. Its totient is φ = 1053072.

The previous prime is 1389559. The next prime is 1389569. The reversal of 1389565 is 5659831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1389565 - 2⁵ = 1389533 is a prime.

1389565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389569) 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, 7219 + ... + 7408.

It is an arithmetic number, because the mean of its divisors is an integer number (219420).

2^1389565 is an apocalyptic number.

It is an amenable number.

1389565 is a deficient number, since it is larger than the sum of its proper divisors (365795).

1389565 is a wasteful number, since it uses less digits than its factorization.

1389565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14651.

The product of its digits is 32400, while the sum is 37.

The square root of 1389565 is about 1178.7981167274. The cubic root of 1389565 is about 111.5902598523.

The spelling of 1389565 in words is "one million, three hundred eighty-nine thousand, five hundred sixty-five".