9906049555 has 16 divisors (see below), whose sum is σ = 12286936800. Its totient is φ = 7662792960.

The previous prime is 9906049523. The next prime is 9906049567. The reversal of 9906049555 is 5559406099.

9906049555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9906049555 - 2⁵ = 9906049523 is a prime.

It is a super-2 number, since 2×9906049555² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257250 + ... + 293239.

It is an arithmetic number, because the mean of its divisors is an integer number (767933550).

Almost surely, 2^9906049555 is an apocalyptic number.

9906049555 is a deficient number, since it is larger than the sum of its proper divisors (2380887245).

9906049555 is a wasteful number, since it uses less digits than its factorization.

9906049555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550614.

The product of its (nonzero) digits is 2187000, while the sum is 52.

The square root of 9906049555 is about 99529.1392256559. The cubic root of 9906049555 is about 2147.6664463247. Note that the first 3 decimals are identical.

The spelling of 9906049555 in words is "nine billion, nine hundred six million, forty-nine thousand, five hundred fifty-five".