1084385 has 4 divisors (see below), whose sum is σ = 1301268. Its totient is φ = 867504.

The previous prime is 1084373. The next prime is 1084403. The reversal of 1084385 is 5834801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 351649 = 856^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084385 - 2²⁰ = 35809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108434 + ... + 108443.

It is an arithmetic number, because the mean of its divisors is an integer number (325317).

2^1084385 is an apocalyptic number.

It is an amenable number.

1084385 is a deficient number, since it is larger than the sum of its proper divisors (216883).

1084385 is an equidigital number, since it uses as much as digits as its factorization.

1084385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216882.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1084385 is about 1041.3380815086. The cubic root of 1084385 is about 102.7372256759.

The spelling of 1084385 in words is "one million, eighty-four thousand, three hundred eighty-five".