9943384049 has 2 divisors, whose sum is σ = 9943384050. Its totient is φ = 9943384048.

The previous prime is 9943384021. The next prime is 9943384067. The reversal of 9943384049 is 9404833499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9714073600 + 229310449 = 98560^2 + 15143^2 .

It is an emirp because it is prime and its reverse (9404833499) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9943384049 is a prime.

It is a super-3 number, since 3×9943384049³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9943384079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971692024 + 4971692025.

It is an arithmetic number, because the mean of its divisors is an integer number (4971692025).

Almost surely, 2^9943384049 is an apocalyptic number.

It is an amenable number.

9943384049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9943384049 is an equidigital number, since it uses as much as digits as its factorization.

9943384049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The square root of 9943384049 is about 99716.5184360144. The cubic root of 9943384049 is about 2150.3611471208.

The spelling of 9943384049 in words is "nine billion, nine hundred forty-three million, three hundred eighty-four thousand, forty-nine".