4149455549 has 2 divisors, whose sum is σ = 4149455550. Its totient is φ = 4149455548.

The previous prime is 4149455509. The next prime is 4149455551. The reversal of 4149455549 is 9455549414.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3627652900 + 521802649 = 60230^2 + 22843^2 .

It is a cyclic number.

It is not a de Polignac number, because 4149455549 - 2¹⁶ = 4149390013 is a prime.

It is a Sophie Germain prime.

Together with 4149455551, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4149455497 and 4149455506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4149455509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074727774 + 2074727775.

It is an arithmetic number, because the mean of its divisors is an integer number (2074727775).

Almost surely, 2^4149455549 is an apocalyptic number.

It is an amenable number.

4149455549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149455549 is an equidigital number, since it uses as much as digits as its factorization.

4149455549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592000, while the sum is 50.

The square root of 4149455549 is about 64416.2677357203. The cubic root of 4149455549 is about 1606.9302964714.

The spelling of 4149455549 in words is "four billion, one hundred forty-nine million, four hundred fifty-five thousand, five hundred forty-nine".