144221679 has 12 divisors (see below), whose sum is σ = 238080336. Its totient is φ = 82412352.

The previous prime is 144221677. The next prime is 144221683. The reversal of 144221679 is 976122441.

It is a happy number.

It is not a de Polignac number, because 144221679 - 2¹ = 144221677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144221677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1144554 + ... + 1144679.

It is an arithmetic number, because the mean of its divisors is an integer number (19840028).

Almost surely, 2^144221679 is an apocalyptic number.

144221679 is a deficient number, since it is larger than the sum of its proper divisors (93858657).

144221679 is a wasteful number, since it uses less digits than its factorization.

144221679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289246 (or 2289243 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 144221679 is about 12009.2330729318. The cubic root of 144221679 is about 524.4171054470.

The spelling of 144221679 in words is "one hundred forty-four million, two hundred twenty-one thousand, six hundred seventy-nine".