144397908 has 18 divisors (see below), whose sum is σ = 365005914. Its totient is φ = 48132624.

The previous prime is 144397901. The next prime is 144397909. The reversal of 144397908 is 809793441.

It can be written as a sum of positive squares in only one way, i.e., 132987024 + 11410884 = 11532^2 + 3378^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144397901) 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 5 ways as a sum of consecutive naturals, for example, 2005491 + ... + 2005562.

Almost surely, 2^144397908 is an apocalyptic number.

144397908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

144397908 is an abundant number, since it is smaller than the sum of its proper divisors (220608006).

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

144397908 is a wasteful number, since it uses less digits than its factorization.

144397908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011063 (or 4011058 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 144397908 is about 12016.5680624711. The cubic root of 144397908 is about 524.6306190825.

The spelling of 144397908 in words is "one hundred forty-four million, three hundred ninety-seven thousand, nine hundred eight".