4440138061 has 8 divisors (see below), whose sum is σ = 4594390200. Its totient is φ = 4285962240.

The previous prime is 4440138049. The next prime is 4440138071. The reversal of 4440138061 is 1608310444.

It can be written as a sum of positive squares in 4 ways, for example, as 13764100 + 4426373961 = 3710^2 + 66531^2 .

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 4440138061 - 2⁹ = 4440137549 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 (4440138011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115485 + ... + 149053.

It is an arithmetic number, because the mean of its divisors is an integer number (574298775).

Almost surely, 2^4440138061 is an apocalyptic number.

It is an amenable number.

4440138061 is a deficient number, since it is larger than the sum of its proper divisors (154252139).

4440138061 is a wasteful number, since it uses less digits than its factorization.

4440138061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38159.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 4440138061 is about 66634.3609633949. The cubic root of 4440138061 is about 1643.6101885432.

The spelling of 4440138061 in words is "four billion, four hundred forty million, one hundred thirty-eight thousand, sixty-one".