144987 has 8 divisors (see below), whose sum is σ = 199680. Its totient is φ = 93480.

The previous prime is 144983. The next prime is 145007. The reversal of 144987 is 789441.

144987 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 144987 - 2² = 144983 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144987.

It is not an unprimeable number, because it can be changed into a prime (144983) 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, 687 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (24960).

2¹⁴⁴⁹⁸⁷ is an apocalyptic number.

144987 is a deficient number, since it is larger than the sum of its proper divisors (54693).

144987 is a wasteful number, since it uses less digits than its factorization.

144987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

The product of its digits is 8064, while the sum is 33.

The square root of 144987 is about 380.7715850743. The cubic root of 144987 is about 52.5343086403.

The spelling of 144987 in words is "one hundred forty-four thousand, nine hundred eighty-seven".