144706447 has 4 divisors (see below), whose sum is σ = 144854640. Its totient is φ = 144558256.

The previous prime is 144706427. The next prime is 144706453. The reversal of 144706447 is 744607441.

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 144706447 - 2²⁷ = 10488719 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 (144706417) 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 3 ways as a sum of consecutive naturals, for example, 72622 + ... + 74587.

It is an arithmetic number, because the mean of its divisors is an integer number (36213660).

Almost surely, 2^144706447 is an apocalyptic number.

144706447 is a deficient number, since it is larger than the sum of its proper divisors (148193).

144706447 is an equidigital number, since it uses as much as digits as its factorization.

144706447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148192.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 144706447 is about 12029.3992784345. The cubic root of 144706447 is about 525.0040175052.

The spelling of 144706447 in words is "one hundred forty-four million, seven hundred six thousand, four hundred forty-seven".