144778089 has 8 divisors (see below), whose sum is σ = 195918880. Its totient is φ = 95078016.

The previous prime is 144778087. The next prime is 144778129. The reversal of 144778089 is 980877441.

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

It is not a de Polignac number, because 144778089 - 2¹ = 144778087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144778087) 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, 359944 + ... + 360345.

It is an arithmetic number, because the mean of its divisors is an integer number (24489860).

Almost surely, 2^144778089 is an apocalyptic number.

It is an amenable number.

144778089 is a deficient number, since it is larger than the sum of its proper divisors (51140791).

144778089 is an equidigital number, since it uses as much as digits as its factorization.

144778089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720359.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 144778089 is about 12032.3766978931. The cubic root of 144778089 is about 525.0906437595.

The spelling of 144778089 in words is "one hundred forty-four million, seven hundred seventy-eight thousand, eighty-nine".