1385389 has 2 divisors, whose sum is σ = 1385390. Its totient is φ = 1385388.

The previous prime is 1385387. The next prime is 1385393. The reversal of 1385389 is 9835831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 81225 = 1142^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385389 - 2¹ = 1385387 is a prime.

Together with 1385387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385383) by changing a digit.

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 as a sum of consecutive naturals, namely, 692694 + 692695.

It is an arithmetic number, because the mean of its divisors is an integer number (692695).

2^1385389 is an apocalyptic number.

It is an amenable number.

1385389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385389 is an equidigital number, since it uses as much as digits as its factorization.

1385389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 1385389 is about 1177.0254882542. The cubic root of 1385389 is about 111.4783618786.

The spelling of 1385389 in words is "one million, three hundred eighty-five thousand, three hundred eighty-nine".