144423209 has 12 divisors (see below), whose sum is σ = 167928384. Its totient is φ = 121672632.

The previous prime is 144423179. The next prime is 144423221. The reversal of 144423209 is 902324441.

144423209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144423209 - 2¹² = 144419113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144423229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21404 + ... + 27330.

It is an arithmetic number, because the mean of its divisors is an integer number (13994032).

Almost surely, 2^144423209 is an apocalyptic number.

It is an amenable number.

144423209 is a deficient number, since it is larger than the sum of its proper divisors (23505175).

144423209 is an frugal number, since it uses more digits than its factorization.

144423209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052 (or 5993 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 144423209 is about 12017.6207711843. The cubic root of 144423209 is about 524.6612587325.

It can be divided in two parts, 14442 and 3209, that multiplied together give a triangular number (46344378 = T₉₆₂₇).

The spelling of 144423209 in words is "one hundred forty-four million, four hundred twenty-three thousand, two hundred nine".