439740 has 72 divisors (see below), whose sum is σ = 1528800. Its totient is φ = 100224.

The previous prime is 439729. The next prime is 439753. The reversal of 439740 is 47934.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 439740.

It is an unprimeable number.

439740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1086 + ... + 1434.

2⁴³⁹⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764400).

439740 is an abundant number, since it is smaller than the sum of its proper divisors (1089060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439740 is a wasteful number, since it uses less digits than its factorization.

439740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 439740 is about 663.1289467366. The cubic root of 439740 is about 76.0440649355.

The spelling of 439740 in words is "four hundred thirty-nine thousand, seven hundred forty".