143844 has 12 divisors (see below), whose sum is σ = 335664. Its totient is φ = 47944.

The previous prime is 143833. The next prime is 143873. The reversal of 143844 is 448341.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is an unprimeable number.

143844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5982 + ... + 6005.

It is an arithmetic number, because the mean of its divisors is an integer number (27972).

2¹⁴³⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

143844 is an abundant number, since it is smaller than the sum of its proper divisors (191820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143844 is a wasteful number, since it uses less digits than its factorization.

143844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11994 (or 11992 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 143844 is about 379.2677154729. The cubic root of 143844 is about 52.3958934684.

The spelling of 143844 in words is "one hundred forty-three thousand, eight hundred forty-four".