144385399 has 4 divisors (see below), whose sum is σ = 144415336. Its totient is φ = 144355464.

The previous prime is 144385391. The next prime is 144385429. The reversal of 144385399 is 993583441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144385399 - 2³ = 144385391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144385391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5904 + ... + 17989.

It is an arithmetic number, because the mean of its divisors is an integer number (36103834).

Almost surely, 2^144385399 is an apocalyptic number.

144385399 is a deficient number, since it is larger than the sum of its proper divisors (29937).

144385399 is an equidigital number, since it uses as much as digits as its factorization.

144385399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29936.

The product of its digits is 466560, while the sum is 46.

The square root of 144385399 is about 12016.0475614904. The cubic root of 144385399 is about 524.6154692925.

The spelling of 144385399 in words is "one hundred forty-four million, three hundred eighty-five thousand, three hundred ninety-nine".