144847749 has 8 divisors (see below), whose sum is σ = 197239680. Its totient is φ = 94510496.

The previous prime is 144847723. The next prime is 144847751. The reversal of 144847749 is 947748441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144847749 - 2¹⁶ = 144782213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144847698 and 144847707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144847709) 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 7 ways as a sum of consecutive naturals, for example, 513504 + ... + 513785.

It is an arithmetic number, because the mean of its divisors is an integer number (24654960).

Almost surely, 2^144847749 is an apocalyptic number.

It is an amenable number.

144847749 is a deficient number, since it is larger than the sum of its proper divisors (52391931).

144847749 is a wasteful number, since it uses less digits than its factorization.

144847749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027339.

The product of its digits is 903168, while the sum is 48.

The square root of 144847749 is about 12035.2710397398. The cubic root of 144847749 is about 525.1748460712.

The spelling of 144847749 in words is "one hundred forty-four million, eight hundred forty-seven thousand, seven hundred forty-nine".