1789389 has 12 divisors (see below), whose sum is σ = 2954016. Its totient is φ = 1022472.

The previous prime is 1789373. The next prime is 1789391. The reversal of 1789389 is 9839871.

It is not a de Polignac number, because 1789389 - 2⁴ = 1789373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1789309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14139 + ... + 14264.

It is an arithmetic number, because the mean of its divisors is an integer number (246168).

2^1789389 is an apocalyptic number.

It is an amenable number.

1789389 is a deficient number, since it is larger than the sum of its proper divisors (1164627).

1789389 is a wasteful number, since it uses less digits than its factorization.

1789389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28416 (or 28413 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1789389 is about 1337.6804551162. The cubic root of 1789389 is about 121.4045381337.

The spelling of 1789389 in words is "one million, seven hundred eighty-nine thousand, three hundred eighty-nine".