1440605 has 8 divisors (see below), whose sum is σ = 1804032. Its totient is φ = 1102288.

The previous prime is 1440589. The next prime is 1440611. The reversal of 1440605 is 5060441.

It is a happy number.

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 1440605 - 2⁴ = 1440589 is a prime.

It is a Duffinian 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, 6149 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (225504).

2^1440605 is an apocalyptic number.

It is an amenable number.

1440605 is a deficient number, since it is larger than the sum of its proper divisors (363427).

1440605 is a wasteful number, since it uses less digits than its factorization.

1440605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1440605 is about 1200.2520568614. The cubic root of 1440605 is about 112.9401358847.

The spelling of 1440605 in words is "one million, four hundred forty thousand, six hundred five".