144297385 has 4 divisors (see below), whose sum is σ = 173156868. Its totient is φ = 115437904.

The previous prime is 144297353. The next prime is 144297389. The reversal of 144297385 is 583792441.

144297385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21353641 + 122943744 = 4621^2 + 11088^2 .

It is a cyclic number.

It is not a de Polignac number, because 144297385 - 2⁵ = 144297353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144297389) 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, 14429734 + ... + 14429743.

It is an arithmetic number, because the mean of its divisors is an integer number (43289217).

Almost surely, 2^144297385 is an apocalyptic number.

It is an amenable number.

144297385 is a deficient number, since it is larger than the sum of its proper divisors (28859483).

144297385 is an equidigital number, since it uses as much as digits as its factorization.

144297385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28859482.

The product of its digits is 241920, while the sum is 43.

The square root of 144297385 is about 12012.3846508510. The cubic root of 144297385 is about 524.5088498063.

The spelling of 144297385 in words is "one hundred forty-four million, two hundred ninety-seven thousand, three hundred eighty-five".