144397 has 4 divisors (see below), whose sum is σ = 157536. Its totient is φ = 131260.

The previous prime is 144383. The next prime is 144407. The reversal of 144397 is 793441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144397 is a prime.

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 (144307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6553 + ... + 6574.

It is an arithmetic number, because the mean of its divisors is an integer number (39384).

2¹⁴⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

144397 is a deficient number, since it is larger than the sum of its proper divisors (13139).

144397 is a wasteful number, since it uses less digits than its factorization.

144397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13138.

The product of its digits is 3024, while the sum is 28.

The square root of 144397 is about 379.9960526111. The cubic root of 144397 is about 52.4629519423.

It can be divided in two parts, 1443 and 97, that added together give a triangular number (1540 = T₅₅).

The spelling of 144397 in words is "one hundred forty-four thousand, three hundred ninety-seven".