144904289 has 4 divisors (see below), whose sum is σ = 145367556. Its totient is φ = 144441024.

The previous prime is 144904283. The next prime is 144904339. The reversal of 144904289 is 982409441.

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 63760225 + 81144064 = 7985^2 + 9008^2 .

It is a cyclic number.

It is not a de Polignac number, because 144904289 - 2⁸ = 144904033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144904283) 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, 231164 + ... + 231789.

It is an arithmetic number, because the mean of its divisors is an integer number (36341889).

Almost surely, 2^144904289 is an apocalyptic number.

It is an amenable number.

144904289 is a deficient number, since it is larger than the sum of its proper divisors (463267).

144904289 is an equidigital number, since it uses as much as digits as its factorization.

144904289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463266.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 144904289 is about 12037.6197397991. The cubic root of 144904289 is about 525.2431695886.

The spelling of 144904289 in words is "one hundred forty-four million, nine hundred four thousand, two hundred eighty-nine".