144816389 has 4 divisors (see below), whose sum is σ = 148184256. Its totient is φ = 141448524.

The previous prime is 144816383. The next prime is 144816403. The reversal of 144816389 is 983618441.

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 not a de Polignac number, because 144816389 - 2²⁴ = 128039173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144816383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683869 + ... + 1683954.

It is an arithmetic number, because the mean of its divisors is an integer number (37046064).

Almost surely, 2^144816389 is an apocalyptic number.

It is an amenable number.

144816389 is a deficient number, since it is larger than the sum of its proper divisors (3367867).

144816389 is an equidigital number, since it uses as much as digits as its factorization.

144816389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367866.

The product of its digits is 165888, while the sum is 44.

The square root of 144816389 is about 12033.9681319173. The cubic root of 144816389 is about 525.1369426588.

The spelling of 144816389 in words is "one hundred forty-four million, eight hundred sixteen thousand, three hundred eighty-nine".