239653 has 4 divisors (see below), whose sum is σ = 244800. Its totient is φ = 234508.

The previous prime is 239641. The next prime is 239671. The reversal of 239653 is 356932.

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 239653 - 2¹³ = 231461 is a prime.

It is a Duffinian number.

239653 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239623) 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, 2503 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (61200).

2²³⁹⁶⁵³ is an apocalyptic number.

It is an amenable number.

239653 is a deficient number, since it is larger than the sum of its proper divisors (5147).

239653 is an equidigital number, since it uses as much as digits as its factorization.

239653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146.

The product of its digits is 4860, while the sum is 28.

The square root of 239653 is about 489.5436650596. The cubic root of 239653 is about 62.1146854042.

The spelling of 239653 in words is "two hundred thirty-nine thousand, six hundred fifty-three".