144947 has 4 divisors (see below), whose sum is σ = 158136. Its totient is φ = 131760.

The previous prime is 144941. The next prime is 144961. The reversal of 144947 is 749441.

144947 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 is a cyclic number.

It is not a de Polignac number, because 144947 - 2⁴ = 144931 is a prime.

It is a d-powerful number, because it can be written as 1 + 4⁴ + 9⁴ + 4⁶ + 4⁷ + 7⁶ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144947.

It is not an unprimeable number, because it can be changed into a prime (144941) 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, 6578 + ... + 6599.

It is an arithmetic number, because the mean of its divisors is an integer number (39534).

2¹⁴⁴⁹⁴⁷ is an apocalyptic number.

144947 is a deficient number, since it is larger than the sum of its proper divisors (13189).

144947 is a wasteful number, since it uses less digits than its factorization.

144947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13188.

The product of its digits is 4032, while the sum is 29.

The square root of 144947 is about 380.7190565233. The cubic root of 144947 is about 52.5294770217.

The spelling of 144947 in words is "one hundred forty-four thousand, nine hundred forty-seven".