44228981 has 2 divisors, whose sum is σ = 44228982. Its totient is φ = 44228980.

The previous prime is 44228969. The next prime is 44228999. The reversal of 44228981 is 18982244.

44228981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42706225 + 1522756 = 6535^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 44228981 - 2¹⁸ = 43966837 is a prime.

It is a super-2 number, since 2×44228981² = 3912405520596722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44228281) 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 as a sum of consecutive naturals, namely, 22114490 + 22114491.

It is an arithmetic number, because the mean of its divisors is an integer number (22114491).

Almost surely, 2^44228981 is an apocalyptic number.

It is an amenable number.

44228981 is a deficient number, since it is larger than the sum of its proper divisors (1).

44228981 is an equidigital number, since it uses as much as digits as its factorization.

44228981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 38.

The square root of 44228981 is about 6650.4872753807. The cubic root of 44228981 is about 353.6461853715.

The spelling of 44228981 in words is "forty-four million, two hundred twenty-eight thousand, nine hundred eighty-one".