4999549509 has 6 divisors (see below), whose sum is σ = 7221571526. Its totient is φ = 3333033000.

The previous prime is 4999549487. The next prime is 4999549517. The reversal of 4999549509 is 9059459994.

It is a happy number.

4999549509 is a `hidden beast` number, since 499 + 9 + 54 + 95 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4322405025 + 677144484 = 65745^2 + 26022^2 .

It is not a de Polignac number, because 4999549509 - 2⁸ = 4999549253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999549549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277752742 + ... + 277752759.

Almost surely, 2^4999549509 is an apocalyptic number.

It is an amenable number.

4999549509 is a deficient number, since it is larger than the sum of its proper divisors (2222022017).

4999549509 is a wasteful number, since it uses less digits than its factorization.

4999549509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555505507 (or 555505504 counting only the distinct ones).

The product of its (nonzero) digits is 23619600, while the sum is 63.

The square root of 4999549509 is about 70707.4925944910. The cubic root of 4999549509 is about 1709.9245898827.

The spelling of 4999549509 in words is "four billion, nine hundred ninety-nine million, five hundred forty-nine thousand, five hundred nine".