339840 has 96 divisors (see below), whose sum is σ = 1193400. Its totient is φ = 89088.

The previous prime is 339839. The next prime is 339841. The reversal of 339840 is 48933.

339840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (339839) and next prime (339841).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (339841) 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, 5731 + ... + 5789.

2³³⁹⁸⁴⁰ is an apocalyptic number.

339840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596700).

339840 is an abundant number, since it is smaller than the sum of its proper divisors (853560).

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

339840 is a wasteful number, since it uses less digits than its factorization.

339840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 339840 is about 582.9579744716. The cubic root of 339840 is about 69.7843704657.

The spelling of 339840 in words is "three hundred thirty-nine thousand, eight hundred forty".