1384321 has 4 divisors (see below), whose sum is σ = 1457200. Its totient is φ = 1311444.

The previous prime is 1384309. The next prime is 1384337. The reversal of 1384321 is 1234831.

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 1384321 - 2⁷ = 1384193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1384292 and 1384301.

It is not an unprimeable number, because it can be changed into a prime (1384351) 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, 36411 + ... + 36448.

It is an arithmetic number, because the mean of its divisors is an integer number (364300).

2^1384321 is an apocalyptic number.

It is an amenable number.

1384321 is a deficient number, since it is larger than the sum of its proper divisors (72879).

1384321 is an equidigital number, since it uses as much as digits as its factorization.

1384321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72878.

The product of its digits is 576, while the sum is 22.

The square root of 1384321 is about 1176.5717147714. The cubic root of 1384321 is about 111.4497081941.

It can be divided in two parts, 13843 and 21, that multiplied together give a triangular number (290703 = T₇₆₂).

The spelling of 1384321 in words is "one million, three hundred eighty-four thousand, three hundred twenty-one".