8049943549 has 2 divisors, whose sum is σ = 8049943550. Its totient is φ = 8049943548.

The previous prime is 8049943487. The next prime is 8049943553. The reversal of 8049943549 is 9453499408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6950556900 + 1099386649 = 83370^2 + 33157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8049943549 is a prime.

It is a super-2 number, since 2×8049943549² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8049943549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8049943589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4024971774 + 4024971775.

It is an arithmetic number, because the mean of its divisors is an integer number (4024971775).

Almost surely, 2^8049943549 is an apocalyptic number.

It is an amenable number.

8049943549 is a deficient number, since it is larger than the sum of its proper divisors (1).

8049943549 is an equidigital number, since it uses as much as digits as its factorization.

8049943549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 8049943549 is about 89721.4776349565. The cubic root of 8049943549 is about 2004.1533313655.

The spelling of 8049943549 in words is "eight billion, forty-nine million, nine hundred forty-three thousand, five hundred forty-nine".