144434881 has 4 divisors (see below), whose sum is σ = 144466564. Its totient is φ = 144403200.

The previous prime is 144434869. The next prime is 144434887. The reversal of 144434881 is 188434441.

It is a happy number.

144434881 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: 188434441 = 13 ⋅14494957.

It can be written as a sum of positive squares in 2 ways, for example, as 38241856 + 106193025 = 6184^2 + 10305^2 .

It is a cyclic number.

It is not a de Polignac number, because 144434881 - 2⁷ = 144434753 is a prime.

It is a super-2 number, since 2×144434881² = 41722869698968322, which contains 22 as substring.

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 144434881.

It is not an unprimeable number, because it can be changed into a prime (144434887) 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, 7560 + ... + 18601.

It is an arithmetic number, because the mean of its divisors is an integer number (36116641).

Almost surely, 2^144434881 is an apocalyptic number.

It is an amenable number.

144434881 is a deficient number, since it is larger than the sum of its proper divisors (31683).

144434881 is an equidigital number, since it uses as much as digits as its factorization.

144434881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31682.

The product of its digits is 49152, while the sum is 37.

The square root of 144434881 is about 12018.1063816227. The cubic root of 144434881 is about 524.6753923825.

The spelling of 144434881 in words is "one hundred forty-four million, four hundred thirty-four thousand, eight hundred eighty-one".