1084985439 has 16 divisors (see below), whose sum is σ = 1501290720. Its totient is φ = 696160640.

The previous prime is 1084985437. The next prime is 1084985453. The reversal of 1084985439 is 9345894801.

It is a cyclic number.

It is not a de Polignac number, because 1084985439 - 2¹ = 1084985437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1084985391 and 1084985400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084985437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7909 + ... + 47249.

It is an arithmetic number, because the mean of its divisors is an integer number (93830670).

Almost surely, 2^1084985439 is an apocalyptic number.

1084985439 is a deficient number, since it is larger than the sum of its proper divisors (416305281).

1084985439 is a wasteful number, since it uses less digits than its factorization.

1084985439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39690.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 1084985439 is about 32939.1171557466. The cubic root of 1084985439 is about 1027.5618451891.

The spelling of 1084985439 in words is "one billion, eighty-four million, nine hundred eighty-five thousand, four hundred thirty-nine".