1384521 has 4 divisors (see below), whose sum is σ = 1846032. Its totient is φ = 923012.

The previous prime is 1384507. The next prime is 1384561. The reversal of 1384521 is 1254831.

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 1384521 - 2¹⁰ = 1383497 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1384491 and 1384500.

It is not an unprimeable number, because it can be changed into a prime (1384501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230751 + ... + 230756.

It is an arithmetic number, because the mean of its divisors is an integer number (461508).

2^1384521 is an apocalyptic number.

It is an amenable number.

1384521 is a deficient number, since it is larger than the sum of its proper divisors (461511).

1384521 is an equidigital number, since it uses as much as digits as its factorization.

1384521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461510.

The product of its digits is 960, while the sum is 24.

The square root of 1384521 is about 1176.6567043960. The cubic root of 1384521 is about 111.4550751738.

The spelling of 1384521 in words is "one million, three hundred eighty-four thousand, five hundred twenty-one".