144224777 has 4 divisors (see below), whose sum is σ = 144372480. Its totient is φ = 144077076.

The previous prime is 144224771. The next prime is 144224797. The reversal of 144224777 is 777422441.

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-144224777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144224777.

It is not an unprimeable number, because it can be changed into a prime (144224771) 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, 72377 + ... + 74342.

It is an arithmetic number, because the mean of its divisors is an integer number (36093120).

Almost surely, 2^144224777 is an apocalyptic number.

It is an amenable number.

144224777 is a deficient number, since it is larger than the sum of its proper divisors (147703).

144224777 is an equidigital number, since it uses as much as digits as its factorization.

144224777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147702.

The product of its digits is 87808, while the sum is 38.

The square root of 144224777 is about 12009.3620563292. The cubic root of 144224777 is about 524.4208603900.

The spelling of 144224777 in words is "one hundred forty-four million, two hundred twenty-four thousand, seven hundred seventy-seven".