9944659957 has 2 divisors, whose sum is σ = 9944659958. Its totient is φ = 9944659956.

The previous prime is 9944659927. The next prime is 9944660039. The reversal of 9944659957 is 7599564499.

9944659957 is digitally balanced in base 3, 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., 5685009201 + 4259650756 = 75399^2 + 65266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9944659957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9944659892 and 9944659901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9944659927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972329978 + 4972329979.

It is an arithmetic number, because the mean of its divisors is an integer number (4972329979).

Almost surely, 2^9944659957 is an apocalyptic number.

It is an amenable number.

9944659957 is a deficient number, since it is larger than the sum of its proper divisors (1).

9944659957 is an equidigital number, since it uses as much as digits as its factorization.

9944659957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110224800, while the sum is 67.

The square root of 9944659957 is about 99722.9159070271. The cubic root of 9944659957 is about 2150.4531193518.

The spelling of 9944659957 in words is "nine billion, nine hundred forty-four million, six hundred fifty-nine thousand, nine hundred fifty-seven".