1440861 has 4 divisors (see below), whose sum is σ = 1921152. Its totient is φ = 960572.

The previous prime is 1440853. The next prime is 1440877. The reversal of 1440861 is 1680441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1440861 - 2³ = 1440853 is a prime.

It is a D-number.

1440861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240141 + ... + 240146.

It is an arithmetic number, because the mean of its divisors is an integer number (480288).

2^1440861 is an apocalyptic number.

It is an amenable number.

1440861 is a deficient number, since it is larger than the sum of its proper divisors (480291).

1440861 is an equidigital number, since it uses as much as digits as its factorization.

1440861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480290.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1440861 is about 1200.3586963904. The cubic root of 1440861 is about 112.9468254266.

The spelling of 1440861 in words is "one million, four hundred forty thousand, eight hundred sixty-one".