144447685 has 8 divisors (see below), whose sum is σ = 177025536. Its totient is φ = 113099280.

The previous prime is 144447683. The next prime is 144447697. The reversal of 144447685 is 586744441.

It is a happy number.

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

It is not a de Polignac number, because 144447685 - 2¹ = 144447683 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 (144447683) 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 7 ways as a sum of consecutive naturals, for example, 307101 + ... + 307570.

It is an arithmetic number, because the mean of its divisors is an integer number (22128192).

Almost surely, 2^144447685 is an apocalyptic number.

It is an amenable number.

144447685 is a deficient number, since it is larger than the sum of its proper divisors (32577851).

144447685 is an equidigital number, since it uses as much as digits as its factorization.

144447685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614723.

The product of its digits is 430080, while the sum is 43.

The square root of 144447685 is about 12018.6390660507. The cubic root of 144447685 is about 524.6908958979.

The spelling of 144447685 in words is "one hundred forty-four million, four hundred forty-seven thousand, six hundred eighty-five".