239901 has 4 divisors (see below), whose sum is σ = 319872. Its totient is φ = 159932.

The previous prime is 239893. The next prime is 239929. The reversal of 239901 is 109932.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239901 - 2³ = 239893 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39981 + ... + 39986.

It is an arithmetic number, because the mean of its divisors is an integer number (79968).

2²³⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

239901 is a deficient number, since it is larger than the sum of its proper divisors (79971).

239901 is an equidigital number, since it uses as much as digits as its factorization.

239901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79970.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 239901 is about 489.7968966827. The cubic root of 239901 is about 62.1361040545.

It can be divided in two parts, 2 and 39901, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 239901 in words is "two hundred thirty-nine thousand, nine hundred one".