1408321 has 4 divisors (see below), whose sum is σ = 1415812. Its totient is φ = 1400832.

The previous prime is 1408301. The next prime is 1408339. The reversal of 1408321 is 1238041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 1000000 = 639^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1408321 - 2⁵ = 1408289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1408301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3456 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (353953).

2^1408321 is an apocalyptic number.

It is an amenable number.

1408321 is a deficient number, since it is larger than the sum of its proper divisors (7491).

1408321 is an equidigital number, since it uses as much as digits as its factorization.

1408321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7490.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1408321 is about 1186.7270115743. The cubic root of 1408321 is about 112.0900901417.

The spelling of 1408321 in words is "one million, four hundred eight thousand, three hundred twenty-one".