9944681 has 2 divisors, whose sum is σ = 9944682. Its totient is φ = 9944680.

The previous prime is 9944663. The next prime is 9944689. The reversal of 9944681 is 1864499.

9944681 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., 9709456 + 235225 = 3116^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 9944681 - 2⁶ = 9944617 is a prime.

It is a super-2 number, since 2×9944681² = 197793360383522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9944689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972340 + 4972341.

It is an arithmetic number, because the mean of its divisors is an integer number (4972341).

Almost surely, 2^9944681 is an apocalyptic number.

It is an amenable number.

9944681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9944681 is an equidigital number, since it uses as much as digits as its factorization.

9944681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 9944681 is about 3153.5188282298. The cubic root of 9944681 is about 215.0454636144.

The spelling of 9944681 in words is "nine million, nine hundred forty-four thousand, six hundred eighty-one".