144473845 has 4 divisors (see below), whose sum is σ = 173368620. Its totient is φ = 115579072.

The previous prime is 144473809. The next prime is 144473869. The reversal of 144473845 is 548374441.

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 36168196 + 108305649 = 6014^2 + 10407^2 .

It is a cyclic number.

It is not a de Polignac number, because 144473845 - 2⁹ = 144473333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144473798 and 144473807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14447380 + ... + 14447389.

It is an arithmetic number, because the mean of its divisors is an integer number (43342155).

Almost surely, 2^144473845 is an apocalyptic number.

It is an amenable number.

144473845 is a deficient number, since it is larger than the sum of its proper divisors (28894775).

144473845 is an equidigital number, since it uses as much as digits as its factorization.

144473845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28894774.

The product of its digits is 215040, while the sum is 40.

The square root of 144473845 is about 12019.7273263581. The cubic root of 144473845 is about 524.7225684612.

The spelling of 144473845 in words is "one hundred forty-four million, four hundred seventy-three thousand, eight hundred forty-five".