144224719 has 4 divisors (see below), whose sum is σ = 152708544. Its totient is φ = 135740896.

The previous prime is 144224693. The next prime is 144224723. The reversal of 144224719 is 917422441.

It is a happy number.

144224719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 917422441 = 13 ⋅70570957.

It is a cyclic number.

It is not a de Polignac number, because 144224719 - 2⁹ = 144224207 is a prime.

It is a super-2 number, since 2×144224719² = 41601539141257922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144224749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4241887 + ... + 4241920.

It is an arithmetic number, because the mean of its divisors is an integer number (38177136).

Almost surely, 2^144224719 is an apocalyptic number.

144224719 is a deficient number, since it is larger than the sum of its proper divisors (8483825).

144224719 is an equidigital number, since it uses as much as digits as its factorization.

144224719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8483824.

The product of its digits is 16128, while the sum is 34.

The square root of 144224719 is about 12009.3596415463. The cubic root of 144224719 is about 524.4207900914.

The spelling of 144224719 in words is "one hundred forty-four million, two hundred twenty-four thousand, seven hundred nineteen".