1440859 has 4 divisors (see below), whose sum is σ = 1646704. Its totient is φ = 1235016.

The previous prime is 1440853. The next prime is 1440877. The reversal of 1440859 is 9580441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1440859 - 2³ = 1440851 is a prime.

It is a Duffinian number.

1440859 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440859.

It is not an unprimeable number, because it can be changed into a prime (1440851) 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, 102912 + ... + 102925.

It is an arithmetic number, because the mean of its divisors is an integer number (411676).

2^1440859 is an apocalyptic number.

1440859 is a deficient number, since it is larger than the sum of its proper divisors (205845).

1440859 is an equidigital number, since it uses as much as digits as its factorization.

1440859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205844.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1440859 is about 1200.3578633058. The cubic root of 1440859 is about 112.9467731676.

The spelling of 1440859 in words is "one million, four hundred forty thousand, eight hundred fifty-nine".