1384809 has 4 divisors (see below), whose sum is σ = 1846416. Its totient is φ = 923204.

The previous prime is 1384787. The next prime is 1384813. The reversal of 1384809 is 9084831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1384809 - 2¹⁶ = 1319273 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1384809.

It is not an unprimeable number, because it can be changed into a prime (1384829) 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, 230799 + ... + 230804.

It is an arithmetic number, because the mean of its divisors is an integer number (461604).

2^1384809 is an apocalyptic number.

It is an amenable number.

1384809 is a deficient number, since it is larger than the sum of its proper divisors (461607).

1384809 is an equidigital number, since it uses as much as digits as its factorization.

1384809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461606.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1384809 is about 1176.7790786719. The cubic root of 1384809 is about 111.4628027167.

The spelling of 1384809 in words is "one million, three hundred eighty-four thousand, eight hundred nine".