439634 has 16 divisors (see below), whose sum is σ = 730968. Its totient is φ = 196992.

The previous prime is 439631. The next prime is 439639. The reversal of 439634 is 436934.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 429025 + 10609 = 655^2 + 103^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 439597 and 439606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734 + ... + 1190.

2⁴³⁹⁶³⁴ is an apocalyptic number.

439634 is a deficient number, since it is larger than the sum of its proper divisors (291334).

439634 is a wasteful number, since it uses less digits than its factorization.

439634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 7776, while the sum is 29.

The square root of 439634 is about 663.0490177958. The cubic root of 439634 is about 76.0379542651.

The spelling of 439634 in words is "four hundred thirty-nine thousand, six hundred thirty-four".