1404723 has 4 divisors (see below), whose sum is σ = 1872968. Its totient is φ = 936480.

The previous prime is 1404721. The next prime is 1404737. The reversal of 1404723 is 3274041.

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

It is not a de Polignac number, because 1404723 - 2¹ = 1404721 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1404723.

It is not an unprimeable number, because it can be changed into a prime (1404721) 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 in 3 ways as a sum of consecutive naturals, for example, 234118 + ... + 234123.

It is an arithmetic number, because the mean of its divisors is an integer number (468242).

2^1404723 is an apocalyptic number.

1404723 is a deficient number, since it is larger than the sum of its proper divisors (468245).

1404723 is an equidigital number, since it uses as much as digits as its factorization.

1404723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468244.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1404723 is about 1185.2101079555. The cubic root of 1404723 is about 111.9945522435.

Adding to 1404723 its reverse (3274041), we get a palindrome (4678764).

The spelling of 1404723 in words is "one million, four hundred four thousand, seven hundred twenty-three".