144441978 has 16 divisors (see below), whose sum is σ = 301444416. Its totient is φ = 46053920.

The previous prime is 144441943. The next prime is 144442003. The reversal of 144441978 is 879144441.

It is an unprimeable number.

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, 523203 + ... + 523478.

It is an arithmetic number, because the mean of its divisors is an integer number (18840276).

Almost surely, 2^144441978 is an apocalyptic number.

144441978 is an abundant number, since it is smaller than the sum of its proper divisors (157002438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144441978 is a wasteful number, since it uses less digits than its factorization.

144441978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046709.

The product of its digits is 129024, while the sum is 42.

The square root of 144441978 is about 12018.4016408173. The cubic root of 144441978 is about 524.6839857829.

The spelling of 144441978 in words is "one hundred forty-four million, four hundred forty-one thousand, nine hundred seventy-eight".