244442281 has 4 divisors (see below), whose sum is σ = 244596564. Its totient is φ = 244288000.

The previous prime is 244442257. The next prime is 244442293. The reversal of 244442281 is 182244442.

244442281 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: 182244442 = 2 ⋅91122221.

It can be written as a sum of positive squares in 2 ways, for example, as 228281881 + 16160400 = 15109^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 244442281 - 2¹¹ = 244440233 is a prime.

It is a super-2 number, since 2×244442281² = 119504057480965922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244443281) 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, 74740 + ... + 77941.

It is an arithmetic number, because the mean of its divisors is an integer number (61149141).

Almost surely, 2^244442281 is an apocalyptic number.

It is an amenable number.

244442281 is a deficient number, since it is larger than the sum of its proper divisors (154283).

244442281 is a wasteful number, since it uses less digits than its factorization.

244442281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154282.

The product of its digits is 16384, while the sum is 31.

The square root of 244442281 is about 15634.6500120725. The cubic root of 244442281 is about 625.2573071743.

The spelling of 244442281 in words is "two hundred forty-four million, four hundred forty-two thousand, two hundred eighty-one".