1485809 has 8 divisors (see below), whose sum is σ = 1643880. Its totient is φ = 1334016.

The previous prime is 1485793. The next prime is 1485821. The reversal of 1485809 is 9085841.

It can be written as a sum of positive squares in 4 ways, for example, as 577600 + 908209 = 760^2 + 953^2 .

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 1485809 - 2⁴ = 1485793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485889) by changing a digit.

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, 1064 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (205485).

2^1485809 is an apocalyptic number.

It is an amenable number.

1485809 is a deficient number, since it is larger than the sum of its proper divisors (158071).

1485809 is a wasteful number, since it uses less digits than its factorization.

1485809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1485809 is about 1218.9376522202. The cubic root of 1485809 is about 114.1092878297.

The spelling of 1485809 in words is "one million, four hundred eighty-five thousand, eight hundred nine".