439825 has 12 divisors (see below), whose sum is σ = 555148. Its totient is φ = 345600.

The previous prime is 439823. The next prime is 439849. The reversal of 439825 is 528934.

It can be written as a sum of positive squares in 6 ways, for example, as 256 + 439569 = 16^2 + 663^2 .

It is not a de Polignac number, because 439825 - 2¹ = 439823 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 3¹¹ + 8 + 9 + 2⁹ + 5 .

It is a Duffinian number.

439825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (439823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1705 + ... + 1945.

2⁴³⁹⁸²⁵ is an apocalyptic number.

It is an amenable number.

439825 is a deficient number, since it is larger than the sum of its proper divisors (115323).

439825 is a wasteful number, since it uses less digits than its factorization.

439825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 319 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 439825 is about 663.1930337390. The cubic root of 439825 is about 76.0489642920.

The spelling of 439825 in words is "four hundred thirty-nine thousand, eight hundred twenty-five".