144448477 has 4 divisors (see below), whose sum is σ = 145181916. Its totient is φ = 143715040.

The previous prime is 144448471. The next prime is 144448511. The reversal of 144448477 is 774844441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774844441 = 7 ⋅110692063.

It can be written as a sum of positive squares in 2 ways, for example, as 103347556 + 41100921 = 10166^2 + 6411^2 .

It is a cyclic number.

It is not a de Polignac number, because 144448477 - 2¹⁵ = 144415709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144448471) 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, 366424 + ... + 366817.

It is an arithmetic number, because the mean of its divisors is an integer number (36295479).

Almost surely, 2^144448477 is an apocalyptic number.

It is an amenable number.

144448477 is a deficient number, since it is larger than the sum of its proper divisors (733439).

144448477 is an equidigital number, since it uses as much as digits as its factorization.

144448477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733438.

The product of its digits is 401408, while the sum is 43.

The square root of 144448477 is about 12018.6720148276. The cubic root of 144448477 is about 524.6918548482.

The spelling of 144448477 in words is "one hundred forty-four million, four hundred forty-eight thousand, four hundred seventy-seven".