144888644 has 12 divisors (see below), whose sum is σ = 258339564. Its totient is φ = 71077344.

The previous prime is 144888587. The next prime is 144888677. The reversal of 144888644 is 446888441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84640000 + 60248644 = 9200^2 + 7762^2 .

It is an unprimeable number.

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, 341507 + ... + 341930.

It is an arithmetic number, because the mean of its divisors is an integer number (21528297).

Almost surely, 2^144888644 is an apocalyptic number.

It is an amenable number.

144888644 is a deficient number, since it is larger than the sum of its proper divisors (113450920).

144888644 is a wasteful number, since it uses less digits than its factorization.

144888644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683494 (or 683492 counting only the distinct ones).

The product of its digits is 786432, while the sum is 47.

The square root of 144888644 is about 12036.9698844850. The cubic root of 144888644 is about 525.2242657885.

It can be divided in two parts, 14488 and 8644, that added together give a palindrome (23132).

The spelling of 144888644 in words is "one hundred forty-four million, eight hundred eighty-eight thousand, six hundred forty-four".