144989838 has 192 divisors, whose sum is σ = 415134720. Its totient is φ = 36951552.

The previous prime is 144989837. The next prime is 144989849. The reversal of 144989838 is 838989441.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144989837) 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 95 ways as a sum of consecutive naturals, for example, 1330128 + ... + 1330236.

It is an arithmetic number, because the mean of its divisors is an integer number (2162160).

Almost surely, 2^144989838 is an apocalyptic number.

144989838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 144989838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207567360).

144989838 is an abundant number, since it is smaller than the sum of its proper divisors (270144882).

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

144989838 is a wasteful number, since it uses less digits than its factorization.

144989838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 161 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 144989838 is about 12041.1726173160. The cubic root of 144989838 is about 525.3465140982.

It can be divided in two parts, 14498 and 9838, that added together give a square (24336 = 156²).

The spelling of 144989838 in words is "one hundred forty-four million, nine hundred eighty-nine thousand, eight hundred thirty-eight".