144442865 has 8 divisors (see below), whose sum is σ = 198093120. Its totient is φ = 99046512.

The previous prime is 144442811. The next prime is 144442867. The reversal of 144442865 is 568244441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144442865 - 2⁶ = 144442801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144442867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2063435 + ... + 2063504.

It is an arithmetic number, because the mean of its divisors is an integer number (24761640).

Almost surely, 2^144442865 is an apocalyptic number.

It is an amenable number.

144442865 is a deficient number, since it is larger than the sum of its proper divisors (53650255).

144442865 is an equidigital number, since it uses as much as digits as its factorization.

144442865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126951.

The product of its digits is 122880, while the sum is 38.

The square root of 144442865 is about 12018.4385425063. The cubic root of 144442865 is about 524.6850597868.

The spelling of 144442865 in words is "one hundred forty-four million, four hundred forty-two thousand, eight hundred sixty-five".