99000905 has 4 divisors (see below), whose sum is σ = 118801092. Its totient is φ = 79200720.

The previous prime is 99000893. The next prime is 99000917. The reversal of 99000905 is 50900099.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (99000893) and next prime (99000917).

It can be written as a sum of positive squares in 2 ways, for example, as 12082576 + 86918329 = 3476^2 + 9323^2 .

It is not a de Polignac number, because 99000905 - 2¹² = 98996809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9900086 + ... + 9900095.

It is an arithmetic number, because the mean of its divisors is an integer number (29700273).

Almost surely, 2^99000905 is an apocalyptic number.

It is an amenable number.

99000905 is a deficient number, since it is larger than the sum of its proper divisors (19800187).

99000905 is a wasteful number, since it uses less digits than its factorization.

99000905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800186.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 99000905 is about 9949.9198489234. The cubic root of 99000905 is about 462.6079105398.

The spelling of 99000905 in words is "ninety-nine million, nine hundred five", and thus it is an aban number.