439642 has 16 divisors (see below), whose sum is σ = 778752. Its totient is φ = 182160.

The previous prime is 439639. The next prime is 439661. The reversal of 439642 is 246934.

It is a d-powerful number, because it can be written as 4⁴ + 3¹¹ + 6 + 9² + 4⁹ + 2³ .

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 439642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (48672).

2⁴³⁹⁶⁴² is an apocalyptic number.

439642 is a deficient number, since it is larger than the sum of its proper divisors (339110).

439642 is a wasteful number, since it uses less digits than its factorization.

439642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053.

The product of its digits is 5184, while the sum is 28.

The square root of 439642 is about 663.0550505049. The cubic root of 439642 is about 76.0384154820.

It can be divided in two parts, 439 and 642, that added together give a triangular number (1081 = T₄₆).

The spelling of 439642 in words is "four hundred thirty-nine thousand, six hundred forty-two".