144459977 has 4 divisors (see below), whose sum is σ = 144666756. Its totient is φ = 144253200.

The previous prime is 144459971. The next prime is 144460007. The reversal of 144459977 is 779954441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79995136 + 64464841 = 8944^2 + 8029^2 .

It is a cyclic number.

It is not a de Polignac number, because 144459977 - 2¹⁰ = 144458953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144459971) 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, 102338 + ... + 103739.

It is an arithmetic number, because the mean of its divisors is an integer number (36166689).

Almost surely, 2^144459977 is an apocalyptic number.

It is an amenable number.

144459977 is a deficient number, since it is larger than the sum of its proper divisors (206779).

144459977 is an equidigital number, since it uses as much as digits as its factorization.

144459977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206778.

The product of its digits is 1270080, while the sum is 50.

The square root of 144459977 is about 12019.1504275469. The cubic root of 144459977 is about 524.7057786046.

The spelling of 144459977 in words is "one hundred forty-four million, four hundred fifty-nine thousand, nine hundred seventy-seven".