1404439 has 2 divisors, whose sum is σ = 1404440. Its totient is φ = 1404438.

The previous prime is 1404437. The next prime is 1404467. The reversal of 1404439 is 9344041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1404439 - 2¹ = 1404437 is a prime.

Together with 1404437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702219 + 702220.

It is an arithmetic number, because the mean of its divisors is an integer number (702220).

2^1404439 is an apocalyptic number.

1404439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404439 is an equidigital number, since it uses as much as digits as its factorization.

1404439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1404439 is about 1185.0902919187. The cubic root of 1404439 is about 111.9870042319.

The spelling of 1404439 in words is "one million, four hundred four thousand, four hundred thirty-nine".