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99988855 = 583479503
BaseRepresentation
bin1011111010110…
…11010101110111
320222010221220221
411331123111313
5201044120410
613531035211
72322614461
oct575332567
9228127827
1099988855
115149411a
122959bb07
131793b705
14d3cb131
158ba14da
hex5f5b577

99988855 has 16 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 78705568.

The previous prime is 99988853. The next prime is 99988859. The reversal of 99988855 is 55888999.

It is a cyclic number.

It is not a de Polignac number, because 99988855 - 21 = 99988853 is a prime.

It is a super-2 number, since 2×999888552 = 19995542248422050, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99988793 and 99988802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99988853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198534 + ... + 199036.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 299988855 is an apocalyptic number.

99988855 is a deficient number, since it is larger than the sum of its proper divisors (21938825).

99988855 is a wasteful number, since it uses less digits than its factorization.

99988855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its digits is 9331200, while the sum is 61.

The square root of 99988855 is about 9999.4427344728. The cubic root of 99988855 is about 464.1416392181.

The spelling of 99988855 in words is "ninety-nine million, nine hundred eighty-eight thousand, eight hundred fifty-five".

Divisors: 1 5 83 415 479 503 2395 2515 39757 41749 198785 208745 240937 1204685 19997771 99988855