8444981 has 2 divisors, whose sum is σ = 8444982. Its totient is φ = 8444980.

The previous prime is 8444957. The next prime is 8444983. The reversal of 8444981 is 1894448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 970225 = 2734^2 + 985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8444981 is a prime.

It is a super-2 number, since 2×8444981² = 142635408180722, which contains 22 as substring.

Together with 8444983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8444983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4222490 + 4222491.

It is an arithmetic number, because the mean of its divisors is an integer number (4222491).

Almost surely, 2^8444981 is an apocalyptic number.

It is an amenable number.

8444981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8444981 is an equidigital number, since it uses as much as digits as its factorization.

8444981 is an evil number, because the sum of its binary digits is even.

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

The square root of 8444981 is about 2906.0249482756. The cubic root of 8444981 is about 203.6414710509.

The spelling of 8444981 in words is "eight million, four hundred forty-four thousand, nine hundred eighty-one".