99905055 has 8 divisors (see below), whose sum is σ = 159848112. Its totient is φ = 53282688.

The previous prime is 99905051. The next prime is 99905063. The reversal of 99905055 is 55050999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99905055 - 2² = 99905051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99904998 and 99905016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99905051) 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 7 ways as a sum of consecutive naturals, for example, 3330154 + ... + 3330183.

It is an arithmetic number, because the mean of its divisors is an integer number (19981014).

Almost surely, 2^99905055 is an apocalyptic number.

99905055 is a deficient number, since it is larger than the sum of its proper divisors (59943057).

99905055 is a wasteful number, since it uses less digits than its factorization.

99905055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660345.

The product of its (nonzero) digits is 91125, while the sum is 42.

The square root of 99905055 is about 9995.2516226456. The cubic root of 99905055 is about 464.0119382952.

The spelling of 99905055 in words is "ninety-nine million, nine hundred five thousand, fifty-five".