Search a number
-
+
1109089809 = 321726532
BaseRepresentation
bin100001000011011…
…0101111000010001
32212021221121012100
41002012311320101
54232411333214
6302015351013
736325051662
oct10206657021
92767847170
101109089809
1151a063653
1226b522469
13148a14179
14a7427369
156757e309
hex421b5e11

1109089809 has 27 divisors (see below), whose sum is σ = 1704408433. Its totient is φ = 694833792.

The previous prime is 1109089801. The next prime is 1109089853. The reversal of 1109089809 is 9089809011.

The square root of 1109089809 is 33303.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 199809 + 1108890000 = 447^2 + 33300^2 .

It is not a de Polignac number, because 1109089809 - 23 = 1109089801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109089801) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 1698127 + ... + 1698779.

Almost surely, 21109089809 is an apocalyptic number.

1109089809 is the 33303-rd square number.

1109089809 is the 16652-nd centered octagonal number.

It is an amenable number.

1109089809 is a deficient number, since it is larger than the sum of its proper divisors (595318624).

1109089809 is an frugal number, since it uses more digits than its factorization.

1109089809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The cubic root of 1109089809 is about 1035.1157218504.

Multiplying 1109089809 by its product of nonzero digits (46656), we get a square (51745694128704 = 71934482).

The spelling of 1109089809 in words is "one billion, one hundred nine million, eighty-nine thousand, eight hundred nine".

Divisors: 1 3 9 17 51 153 289 653 867 1959 2601 5877 11101 33303 99909 188717 426409 566151 1279227 1698453 3837681 7248953 21746859 65240577 123232201 369696603 1109089809