144389808 has 60 divisors (see below), whose sum is σ = 411737040. Its totient is φ = 47219328.

The previous prime is 144389803. The next prime is 144389821. The reversal of 144389808 is 808983441.

It is not an unprimeable number, because it can be changed into a prime (144389803) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1828 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (6862284).

Almost surely, 2^144389808 is an apocalyptic number.

144389808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144389808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205868520).

144389808 is an abundant number, since it is smaller than the sum of its proper divisors (267347232).

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

144389808 is a wasteful number, since it uses less digits than its factorization.

144389808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18986 (or 18977 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 144389808 is about 12016.2310230787. The cubic root of 144389808 is about 524.6208091817.

The spelling of 144389808 in words is "one hundred forty-four million, three hundred eighty-nine thousand, eight hundred eight".