143899 has 8 divisors (see below), whose sum is σ = 167648. Its totient is φ = 120960.

The previous prime is 143881. The next prime is 143909. The reversal of 143899 is 998341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143899 - 2⁹ = 143387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (20956).

2¹⁴³⁸⁹⁹ is an apocalyptic number.

143899 is a deficient number, since it is larger than the sum of its proper divisors (23749).

143899 is an equidigital number, since it uses as much as digits as its factorization.

143899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its digits is 7776, while the sum is 34.

The square root of 143899 is about 379.3402166921. The cubic root of 143899 is about 52.4025706254.

The spelling of 143899 in words is "one hundred forty-three thousand, eight hundred ninety-nine".