239940 has 72 divisors (see below), whose sum is σ = 768768. Its totient is φ = 60480.

The previous prime is 239933. The next prime is 239947. The reversal of 239940 is 49932.

It is an interprime number because it is at equal distance from previous prime (239933) and next prime (239947).

It is not an unprimeable number, because it can be changed into a prime (239947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5559 + ... + 5601.

2²³⁹⁹⁴⁰ is an apocalyptic number.

239940 is a gapful number since it is divisible by the number (20) 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 239940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384384).

239940 is an abundant number, since it is smaller than the sum of its proper divisors (528828).

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

239940 is a wasteful number, since it uses less digits than its factorization.

239940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 239940 is about 489.8367074853. The cubic root of 239940 is about 62.1394709666.

The spelling of 239940 in words is "two hundred thirty-nine thousand, nine hundred forty".