144979109 has 4 divisors (see below), whose sum is σ = 158159040. Its totient is φ = 131799180.

The previous prime is 144979103. The next prime is 144979129. The reversal of 144979109 is 901979441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144979109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144979109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144979103) 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 3 ways as a sum of consecutive naturals, for example, 6589949 + ... + 6589970.

It is an arithmetic number, because the mean of its divisors is an integer number (39539760).

Almost surely, 2^144979109 is an apocalyptic number.

It is an amenable number.

144979109 is a deficient number, since it is larger than the sum of its proper divisors (13179931).

144979109 is a wasteful number, since it uses less digits than its factorization.

144979109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13179930.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 144979109 is about 12040.7270959855. The cubic root of 144979109 is about 525.3335555308. Note that the first 3 decimals are identical.

The spelling of 144979109 in words is "one hundred forty-four million, nine hundred seventy-nine thousand, one hundred nine".