439109 has 12 divisors (see below), whose sum is σ = 510720. Its totient is φ = 376200.

The previous prime is 439081. The next prime is 439123. The reversal of 439109 is 901934.

It is a happy number.

It is not a de Polignac number, because 439109 - 2⁸ = 438853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439199) 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, 2204 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (42560).

2⁴³⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

439109 is a deficient number, since it is larger than the sum of its proper divisors (71611).

439109 is a wasteful number, since it uses less digits than its factorization.

439109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 439109 is about 662.6530012005. The cubic root of 439109 is about 76.0076746636.

The spelling of 439109 in words is "four hundred thirty-nine thousand, one hundred nine".