1382789 has 4 divisors (see below), whose sum is σ = 1390956. Its totient is φ = 1374624.

The previous prime is 1382779. The next prime is 1382819. The reversal of 1382789 is 9872831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9872831 = 1303 ⋅7577.

It can be written as a sum of positive squares in 2 ways, for example, as 688900 + 693889 = 830^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1382789 - 2⁸ = 1382533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382779) 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, 3824 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (347739).

2^1382789 is an apocalyptic number.

It is an amenable number.

1382789 is a deficient number, since it is larger than the sum of its proper divisors (8167).

1382789 is an equidigital number, since it uses as much as digits as its factorization.

1382789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166.

The product of its digits is 24192, while the sum is 38.

The square root of 1382789 is about 1175.9204905095. The cubic root of 1382789 is about 111.4085799739.

The spelling of 1382789 in words is "one million, three hundred eighty-two thousand, seven hundred eighty-nine".