1440085 has 8 divisors (see below), whose sum is σ = 1740600. Its totient is φ = 1143744.

The previous prime is 1440079. The next prime is 1440107. The reversal of 1440085 is 5800441.

It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 1385329 = 234^2 + 1177^2 .

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 1440085 - 2¹⁵ = 1407317 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 222 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (217575).

2^1440085 is an apocalyptic number.

It is an amenable number.

1440085 is a deficient number, since it is larger than the sum of its proper divisors (300515).

1440085 is a wasteful number, since it uses less digits than its factorization.

1440085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1440085 is about 1200.0354161440. The cubic root of 1440085 is about 112.9265453126.

The spelling of 1440085 in words is "one million, four hundred forty thousand, eighty-five".