4441411981 has 2 divisors, whose sum is σ = 4441411982. Its totient is φ = 4441411980.

The previous prime is 4441411913. The next prime is 4441412011. The reversal of 4441411981 is 1891141444.

4441411981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4061512900 + 379899081 = 63730^2 + 19491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4441411981 is a prime.

It is a super-2 number, since 2×4441411981² = 39452280769940688722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4441411981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4441481981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220705990 + 2220705991.

It is an arithmetic number, because the mean of its divisors is an integer number (2220705991).

Almost surely, 2^4441411981 is an apocalyptic number.

It is an amenable number.

4441411981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4441411981 is an equidigital number, since it uses as much as digits as its factorization.

4441411981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 37.

The square root of 4441411981 is about 66643.9193100166. The cubic root of 4441411981 is about 1643.7673629109.

The spelling of 4441411981 in words is "four billion, four hundred forty-one million, four hundred eleven thousand, nine hundred eighty-one".