144139916 has 12 divisors (see below), whose sum is σ = 252334488. Its totient is φ = 72044352.

The previous prime is 144139907. The next prime is 144139937. The reversal of 144139916 is 619931441.

It is a self number, because there is not a number n which added to its sum of digits gives 144139916.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12395 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (21027874).

Almost surely, 2^144139916 is an apocalyptic number.

It is an amenable number.

144139916 is a deficient number, since it is larger than the sum of its proper divisors (108194572).

144139916 is a wasteful number, since it uses less digits than its factorization.

144139916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808 (or 12806 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 144139916 is about 12005.8284178977. The cubic root of 144139916 is about 524.3179848397.

The spelling of 144139916 in words is "one hundred forty-four million, one hundred thirty-nine thousand, nine hundred sixteen".