239949 has 8 divisors (see below), whose sum is σ = 355520. Its totient is φ = 159948.

The previous prime is 239947. The next prime is 239957. The reversal of 239949 is 949932.

It is not a de Polignac number, because 239949 - 2¹ = 239947 is a prime.

It is a Duffinian number.

239949 is a lucky number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4417 + ... + 4470.

It is an arithmetic number, because the mean of its divisors is an integer number (44440).

2²³⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

239949 is a deficient number, since it is larger than the sum of its proper divisors (115571).

239949 is an equidigital number, since it uses as much as digits as its factorization.

239949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8896 (or 8890 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 239949 is about 489.8458941341. The cubic root of 239949 is about 62.1402478945.

The spelling of 239949 in words is "two hundred thirty-nine thousand, nine hundred forty-nine".