4444400233981 has 2 divisors, whose sum is σ = 4444400233982. Its totient is φ = 4444400233980.

The previous prime is 4444400233967. The next prime is 4444400234033. The reversal of 4444400233981 is 1893320044444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4360725415225 + 83674818756 = 2088235^2 + 289266^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444400233981 - 2³⁵ = 4410040495613 is a prime.

It is a super-2 number, since 2×4444400233981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444400233901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222200116990 + 2222200116991.

It is an arithmetic number, because the mean of its divisors is an integer number (2222200116991).

Almost surely, 2^{4444400233981} is an apocalyptic number.

It is an amenable number.

4444400233981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444400233981 is an equidigital number, since it uses as much as digits as its factorization.

4444400233981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 4444400233981 in words is "four trillion, four hundred forty-four billion, four hundred million, two hundred thirty-three thousand, nine hundred eighty-one".