1404643 has 2 divisors, whose sum is σ = 1404644. Its totient is φ = 1404642.

The previous prime is 1404617. The next prime is 1404649. The reversal of 1404643 is 3464041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1404643 - 2⁹ = 1404131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1404649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702321 + 702322.

It is an arithmetic number, because the mean of its divisors is an integer number (702322).

2^1404643 is an apocalyptic number.

1404643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404643 is an equidigital number, since it uses as much as digits as its factorization.

1404643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1404643 is about 1185.1763581847. The cubic root of 1404643 is about 111.9924261460.

Adding to 1404643 its reverse (3464041), we get a palindrome (4868684).

The spelling of 1404643 in words is "one million, four hundred four thousand, six hundred forty-three".