143839 has 4 divisors (see below), whose sum is σ = 145656. Its totient is φ = 142024.

The previous prime is 143833. The next prime is 143873. The reversal of 143839 is 938341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143839 - 2³ = 143831 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784 + ... + 949.

It is an arithmetic number, because the mean of its divisors is an integer number (36414).

2¹⁴³⁸³⁹ is an apocalyptic number.

143839 is a deficient number, since it is larger than the sum of its proper divisors (1817).

143839 is an equidigital number, since it uses as much as digits as its factorization.

143839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816.

The product of its digits is 2592, while the sum is 28.

The square root of 143839 is about 379.2611237657. The cubic root of 143839 is about 52.3952863697.

The spelling of 143839 in words is "one hundred forty-three thousand, eight hundred thirty-nine".