144396385 has 48 divisors (see below), whose sum is σ = 219424464. Its totient is φ = 90574848.

The previous prime is 144396379. The next prime is 144396389. The reversal of 144396385 is 583693441.

It can be written as a sum of positive squares in 8 ways, for example, as 108241 + 144288144 = 329^2 + 12012^2 .

It is not a de Polignac number, because 144396385 - 2¹¹ = 144394337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144396389) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 153637 + ... + 154573.

It is an arithmetic number, because the mean of its divisors is an integer number (4571343).

Almost surely, 2^144396385 is an apocalyptic number.

It is an amenable number.

144396385 is a deficient number, since it is larger than the sum of its proper divisors (75028079).

144396385 is a wasteful number, since it uses less digits than its factorization.

144396385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 1003 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 144396385 is about 12016.5046914650. The cubic root of 144396385 is about 524.6287746069.

The spelling of 144396385 in words is "one hundred forty-four million, three hundred ninety-six thousand, three hundred eighty-five".