1404845 has 8 divisors (see below), whose sum is σ = 1815576. Its totient is φ = 1037376.

The previous prime is 1404833. The next prime is 1404859. The reversal of 1404845 is 5484041.

It can be written as a sum of positive squares in 4 ways, for example, as 329476 + 1075369 = 574^2 + 1037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1404845 - 2¹⁴ = 1388461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10742 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (226947).

2^1404845 is an apocalyptic number.

It is an amenable number.

1404845 is a deficient number, since it is larger than the sum of its proper divisors (410731).

1404845 is a wasteful number, since it uses less digits than its factorization.

1404845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21631.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 1404845 is about 1185.2615745058. The cubic root of 1404845 is about 111.9977943868.

Adding to 1404845 its reverse (5484041), we get a palindrome (6888886).

The spelling of 1404845 in words is "one million, four hundred four thousand, eight hundred forty-five".