4444468981 has 2 divisors, whose sum is σ = 4444468982. Its totient is φ = 4444468980.

The previous prime is 4444468969. The next prime is 4444469017. The reversal of 4444468981 is 1898644444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4249866481 + 194602500 = 65191^2 + 13950^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444468981 - 2¹¹ = 4444466933 is a prime.

It is a super-2 number, since 2×4444468981² = 39506609046142356722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444468781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222234490 + 2222234491.

It is an arithmetic number, because the mean of its divisors is an integer number (2222234491).

Almost surely, 2^4444468981 is an apocalyptic number.

It is an amenable number.

4444468981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444468981 is an equidigital number, since it uses as much as digits as its factorization.

4444468981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3538944, while the sum is 52.

The square root of 4444468981 is about 66666.8506905793. The cubic root of 4444468981 is about 1644.1444084989.

The spelling of 4444468981 in words is "four billion, four hundred forty-four million, four hundred sixty-eight thousand, nine hundred eighty-one".