144999 has 6 divisors (see below), whose sum is σ = 209456. Its totient is φ = 96660.

The previous prime is 144983. The next prime is 145007. The reversal of 144999 is 999441.

It is not a de Polignac number, because 144999 - 2⁴ = 144983 is a prime.

It is a Duffinian number.

144999 is a modest number, since divided by 999 gives 144 as remainder.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8047 + ... + 8064.

2¹⁴⁴⁹⁹⁹ is an apocalyptic number.

144999 is a deficient number, since it is larger than the sum of its proper divisors (64457).

144999 is a wasteful number, since it uses less digits than its factorization.

144999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16117 (or 16114 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 144999 is about 380.7873422266. The cubic root of 144999 is about 52.5357579525.

The spelling of 144999 in words is "one hundred forty-four thousand, nine hundred ninety-nine".