9900550 has 48 divisors (see below), whose sum is σ = 20570112. Its totient is φ = 3514400.

The previous prime is 9900547. The next prime is 9900589. The reversal of 9900550 is 550099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25659 + ... + 26041.

It is an arithmetic number, because the mean of its divisors is an integer number (428544).

Almost surely, 2^9900550 is an apocalyptic number.

9900550 is an abundant number, since it is smaller than the sum of its proper divisors (10669562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9900550 is a wasteful number, since it uses less digits than its factorization.

9900550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 9900550 is about 3146.5139440339. The cubic root of 9900550 is about 214.7268931786.

The spelling of 9900550 in words is "nine million, nine hundred thousand, five hundred fifty".