144081947 has 4 divisors (see below), whose sum is σ = 149050320. Its totient is φ = 139113576.

The previous prime is 144081929. The next prime is 144081961. The reversal of 144081947 is 749180441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749180441 = 31 ⋅24167111.

It is a cyclic number.

It is not a de Polignac number, because 144081947 - 2¹² = 144077851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144081947.

It is not an unprimeable number, because it can be changed into a prime (144081967) 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, 2484143 + ... + 2484200.

It is an arithmetic number, because the mean of its divisors is an integer number (37262580).

Almost surely, 2^144081947 is an apocalyptic number.

144081947 is a deficient number, since it is larger than the sum of its proper divisors (4968373).

144081947 is an equidigital number, since it uses as much as digits as its factorization.

144081947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968372.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 144081947 is about 12003.4139726996. The cubic root of 144081947 is about 524.2476867905.

The spelling of 144081947 in words is "one hundred forty-four million, eighty-one thousand, nine hundred forty-seven".