144399 has 8 divisors (see below), whose sum is σ = 194560. Its totient is φ = 95256.

The previous prime is 144383. The next prime is 144407. The reversal of 144399 is 993441.

144399 is nontrivially palindromic in base 6 and base 14.

It is a Cunningham number, because it is equal to 380²-1.

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

It is not a de Polignac number, because 144399 - 2⁴ = 144383 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144349) 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, 192 + ... + 570.

It is an arithmetic number, because the mean of its divisors is an integer number (24320).

2¹⁴⁴³⁹⁹ is an apocalyptic number.

144399 is a deficient number, since it is larger than the sum of its proper divisors (50161).

144399 is a wasteful number, since it uses less digits than its factorization.

144399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

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

The square root of 144399 is about 379.9986842082. The cubic root of 144399 is about 52.4631941574.

The spelling of 144399 in words is "one hundred forty-four thousand, three hundred ninety-nine".