1389559 has 2 divisors, whose sum is σ = 1389560. Its totient is φ = 1389558.

The previous prime is 1389551. The next prime is 1389569. The reversal of 1389559 is 9559831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389559 - 2³ = 1389551 is a prime.

1389559 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694779 + 694780.

It is an arithmetic number, because the mean of its divisors is an integer number (694780).

2^1389559 is an apocalyptic number.

1389559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389559 is an equidigital number, since it uses as much as digits as its factorization.

1389559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 40.

The square root of 1389559 is about 1178.7955717596. The cubic root of 1389559 is about 111.5900992403.

The spelling of 1389559 in words is "one million, three hundred eighty-nine thousand, five hundred fifty-nine".