1384865 has 8 divisors (see below), whose sum is σ = 1672488. Its totient is φ = 1100800.

The previous prime is 1384861. The next prime is 1384879. The reversal of 1384865 is 5684831.

It can be written as a sum of positive squares in 4 ways, for example, as 889249 + 495616 = 943^2 + 704^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1384865 - 2² = 1384861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1384861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (209061).

2^1384865 is an apocalyptic number.

It is an amenable number.

1384865 is a deficient number, since it is larger than the sum of its proper divisors (287623).

1384865 is a wasteful number, since it uses less digits than its factorization.

1384865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779.

The product of its digits is 23040, while the sum is 35.

The square root of 1384865 is about 1176.8028721923. The cubic root of 1384865 is about 111.4643051701.

The spelling of 1384865 in words is "one million, three hundred eighty-four thousand, eight hundred sixty-five".