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8929273499721 = 342921074
BaseRepresentation
bin1000000111110000001000…
…1011001101000001001001
31011121122000102102100110000
42001330002023031001021
52132244123003442341
630554015052113213
71611055502303061
oct201740213150111
934548012370400
108929273499721
11293297a117703
121002677765809
134ca047087c23
1422c2717d83a1
1510740e4118b6
hex81f022cd049

8929273499721 has 75 divisors (see below), whose sum is σ = 13944936739591. Its totient is φ = 5693862659184.

The previous prime is 8929273499693. The next prime is 8929273499737. The reversal of 8929273499721 is 1279943729298.

The square root of 8929273499721 is 2988189.

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

8929273499721 is a `hidden beast` number, since 8 + 92 + 9 + 27 + 3 + 499 + 7 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4682294427321 + 4246979072400 = 2163861^2 + 2060820^2 .

It is not a de Polignac number, because 8929273499721 - 213 = 8929273491529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8929273499721.

It is not an unprimeable number, because it can be changed into a prime (8929273499761) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 83451154150 + ... + 83451154256.

Almost surely, 28929273499721 is an apocalyptic number.

8929273499721 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8929273499721 is the 2988189-th square number.

8929273499721 is the 1494095-th centered octagonal number.

It is an amenable number.

8929273499721 is a deficient number, since it is larger than the sum of its proper divisors (5015663239870).

8929273499721 is an frugal number, since it uses more digits than its factorization.

8929273499721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 139 counting only the distinct ones).

The product of its digits is 246903552, while the sum is 72.

The spelling of 8929273499721 in words is "eight trillion, nine hundred twenty-nine billion, two hundred seventy-three million, four hundred ninety-nine thousand, seven hundred twenty-one".

Divisors: 1 3 9 27 29 81 87 107 261 321 783 841 963 2349 2523 2889 3103 7569 8667 9309 11449 22707 27927 34347 68121 83781 89987 103041 251343 269961 309123 332021 809883 927369 996063 1225043 2429649 2988189 3675129 7288947 8964567 9628609 11025387 26893701 28885827 33076161 35526247 86657481 99228483 106578741 131079601 259972443 319736223 393238803 779917329 959208669 1030261163 1179716409 2877626007 3090783489 3539149227 3801308429 9272350467 10617447681 11403925287 27817051401 34211775861 83451154203 102635327583 110237944441 307905982749 330713833323 992141499969 2976424499907 8929273499721