239645 has 16 divisors (see below), whose sum is σ = 338688. Its totient is φ = 159360.

The previous prime is 239641. The next prime is 239671. The reversal of 239645 is 546932.

239645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239645 - 2² = 239641 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 3¹¹ + 6² + 9⁵ + 4⁴ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1352 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2²³⁹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

239645 is a deficient number, since it is larger than the sum of its proper divisors (99043).

239645 is a wasteful number, since it uses less digits than its factorization.

239645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

The product of its digits is 6480, while the sum is 29.

The square root of 239645 is about 489.5354941166. The cubic root of 239645 is about 62.1139942341.

The spelling of 239645 in words is "two hundred thirty-nine thousand, six hundred forty-five".