144459636 has 12 divisors (see below), whose sum is σ = 337072512. Its totient is φ = 48153208.

The previous prime is 144459629. The next prime is 144459647. The reversal of 144459636 is 636954441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6019140 + ... + 6019163.

It is an arithmetic number, because the mean of its divisors is an integer number (28089376).

Almost surely, 2^144459636 is an apocalyptic number.

It is an amenable number.

144459636 is an abundant number, since it is smaller than the sum of its proper divisors (192612876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144459636 is a wasteful number, since it uses less digits than its factorization.

144459636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12038310 (or 12038308 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 144459636 is about 12019.1362418437. The cubic root of 144459636 is about 524.7053657456.

The spelling of 144459636 in words is "one hundred forty-four million, four hundred fifty-nine thousand, six hundred thirty-six".