144649 has 4 divisors (see below), whose sum is σ = 146560. Its totient is φ = 142740.

The previous prime is 144629. The next prime is 144659. The reversal of 144649 is 946441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 946441 = 17 ⋅55673.

It is a cyclic number.

It is not a de Polignac number, because 144649 - 2¹¹ = 142601 is a prime.

It is a Duffinian number.

144649 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144629) 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, 837 + ... + 994.

It is an arithmetic number, because the mean of its divisors is an integer number (36640).

2¹⁴⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

144649 is a deficient number, since it is larger than the sum of its proper divisors (1911).

144649 is an equidigital number, since it uses as much as digits as its factorization.

144649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its digits is 3456, while the sum is 28.

The square root of 144649 is about 380.3274904605. The cubic root of 144649 is about 52.4934534543.

The spelling of 144649 in words is "one hundred forty-four thousand, six hundred forty-nine".