44063981 has 4 divisors (see below), whose sum is σ = 47453532. Its totient is φ = 40674432.

The previous prime is 44063969. The next prime is 44063993. The reversal of 44063981 is 18936044.

44063981 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.

It is an interprime number because it is at equal distance from previous prime (44063969) and next prime (44063993).

It can be written as a sum of positive squares in 2 ways, for example, as 30151081 + 13912900 = 5491^2 + 3730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44063981 is a prime.

It is a super-2 number, since 2×44063981² = 3883268843136722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44063911) 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 3 ways as a sum of consecutive naturals, for example, 1694756 + ... + 1694781.

It is an arithmetic number, because the mean of its divisors is an integer number (11863383).

Almost surely, 2^44063981 is an apocalyptic number.

It is an amenable number.

44063981 is a deficient number, since it is larger than the sum of its proper divisors (3389551).

44063981 is a wasteful number, since it uses less digits than its factorization.

44063981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389550.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 44063981 is about 6638.0705781123. The cubic root of 44063981 is about 353.2058682466.

The spelling of 44063981 in words is "forty-four million, sixty-three thousand, nine hundred eighty-one".