1443985 has 8 divisors (see below), whose sum is σ = 1765800. Its totient is φ = 1133184.

The previous prime is 1443977. The next prime is 1443989. The reversal of 1443985 is 5893441.

It can be written as a sum of positive squares in 4 ways, for example, as 61009 + 1382976 = 247^2 + 1176^2 .

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 1443985 - 2³ = 1443977 is a prime.

1443985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1443985.

It is not an unprimeable number, because it can be changed into a prime (1443989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2460 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (220725).

2^1443985 is an apocalyptic number.

It is an amenable number.

1443985 is a deficient number, since it is larger than the sum of its proper divisors (321815).

1443985 is an equidigital number, since it uses as much as digits as its factorization.

1443985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507.

The product of its digits is 17280, while the sum is 34.

The square root of 1443985 is about 1201.6592695103. The cubic root of 1443985 is about 113.0283949839.

The spelling of 1443985 in words is "one million, four hundred forty-three thousand, nine hundred eighty-five".