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9989900 = 2252283353
BaseRepresentation
bin100110000110…
…111100001100
3200210112120022
4212012330030
510024134100
6554041312
7150625034
oct46067414
920715508
109989900
115703618
123419238
1320ba0ab
1414808c4
15d24e85
hex986f0c

9989900 has 36 divisors (see below), whose sum is σ = 21816312. Its totient is φ = 3970560.

The previous prime is 9989899. The next prime is 9989921. The reversal of 9989900 is 99899.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28124 + ... + 28476.

Almost surely, 29989900 is an apocalyptic number.

It is an amenable number.

9989900 is an abundant number, since it is smaller than the sum of its proper divisors (11826412).

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

9989900 is a wasteful number, since it uses less digits than its factorization.

9989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 9989900 is about 3160.6803065163. The cubic root of 9989900 is about 215.3709119356.

Multiplying 9989900 by its reverse (99899), we get a square (997981020100 = 9989902).

9989900 divided by its reverse (99899) gives a square (100 = 102).

The spelling of 9989900 in words is "nine million, nine hundred eighty-nine thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 283 353 566 706 1132 1412 1415 1765 2830 3530 5660 7060 7075 8825 14150 17650 28300 35300 99899 199798 399596 499495 998990 1997980 2497475 4994950 9989900