144320393 has 8 divisors (see below), whose sum is σ = 165477312. Its totient is φ = 123298416.

The previous prime is 144320359. The next prime is 144320417. The reversal of 144320393 is 393023441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144320393 - 2⁶ = 144320329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144320993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31430 + ... + 35727.

It is an arithmetic number, because the mean of its divisors is an integer number (20684664).

Almost surely, 2^144320393 is an apocalyptic number.

It is an amenable number.

144320393 is a deficient number, since it is larger than the sum of its proper divisors (21156919).

144320393 is an equidigital number, since it uses as much as digits as its factorization.

144320393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67471.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 144320393 is about 12013.3422909697. The cubic root of 144320393 is about 524.5367257059.

The spelling of 144320393 in words is "one hundred forty-four million, three hundred twenty thousand, three hundred ninety-three".