1359389 has 4 divisors (see below), whose sum is σ = 1361724. Its totient is φ = 1357056.

The previous prime is 1359377. The next prime is 1359401. The reversal of 1359389 is 9839531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9839531 = 13 ⋅756887.

It is an interprime number because it is at equal distance from previous prime (1359377) and next prime (1359401).

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 1138489 = 470^2 + 1067^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359389 - 2⁴ = 1359373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1359329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (340431).

2^1359389 is an apocalyptic number.

It is an amenable number.

1359389 is a deficient number, since it is larger than the sum of its proper divisors (2335).

1359389 is a wasteful number, since it uses less digits than its factorization.

1359389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334.

The product of its digits is 29160, while the sum is 38.

The square root of 1359389 is about 1165.9283854508. The cubic root of 1359389 is about 110.7765708302.

The spelling of 1359389 in words is "one million, three hundred fifty-nine thousand, three hundred eighty-nine".