144993 has 8 divisors (see below), whose sum is σ = 204768. Its totient is φ = 90944.

The previous prime is 144983. The next prime is 145007. The reversal of 144993 is 399441.

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

It is a cyclic number.

It is not a de Polignac number, because 144993 - 2⁵ = 144961 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144993.

It is not an unprimeable number, because it can be changed into a prime (144973) 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, 1371 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (25596).

2¹⁴⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

144993 is a deficient number, since it is larger than the sum of its proper divisors (59775).

144993 is a wasteful number, since it uses less digits than its factorization.

144993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its digits is 3888, while the sum is 30.

The square root of 144993 is about 380.7794637320. The cubic root of 144993 is about 52.5350333064.

The spelling of 144993 in words is "one hundred forty-four thousand, nine hundred ninety-three".