9945314849 has 2 divisors, whose sum is σ = 9945314850. Its totient is φ = 9945314848.

The previous prime is 9945314831. The next prime is 9945314921. The reversal of 9945314849 is 9484135499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9913786624 + 31528225 = 99568^2 + 5615^2 .

It is a cyclic number.

It is not a de Polignac number, because 9945314849 - 2⁸ = 9945314593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9945314794 and 9945314803.

It is not a weakly prime, because it can be changed into another prime (9945314809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972657424 + 4972657425.

It is an arithmetic number, because the mean of its divisors is an integer number (4972657425).

Almost surely, 2^9945314849 is an apocalyptic number.

It is an amenable number.

9945314849 is a deficient number, since it is larger than the sum of its proper divisors (1).

9945314849 is an equidigital number, since it uses as much as digits as its factorization.

9945314849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 56.

The square root of 9945314849 is about 99726.1994111878. The cubic root of 9945314849 is about 2150.5003233667.

The spelling of 9945314849 in words is "nine billion, nine hundred forty-five million, three hundred fourteen thousand, eight hundred forty-nine".