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BaseRepresentation
bin111011100111000…
…101000010011111
32120200212100021201
4323213011002133
54022011144444
6243123340331
733532465303
oct7347050237
92520770251
101000099999
11473591a28
1223ab216a7
1312c273862
1496b75d03
155cc00dd4
hex3b9c509f

1000099999 has 2 divisors, whose sum is σ = 1000100000. Its totient is φ = 1000099998.

The previous prime is 1000099993. The next prime is 1000100009. The reversal of 1000099999 is 9999900001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000099999 - 25 = 1000099967 is a prime.

1000099999 is a modest number, since divided by 99999 gives 10000 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000099993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500049999 + 500050000.

It is an arithmetic number, because the mean of its divisors is an integer number (500050000).

Almost surely, 21000099999 is an apocalyptic number.

1000099999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000099999 is an equidigital number, since it uses as much as digits as its factorization.

1000099999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 46.

The square root of 1000099999 is about 31624.3576851768. The cubic root of 1000099999 is about 1000.0333318890.

The spelling of 1000099999 in words is "one billion, ninety-nine thousand, nine hundred ninety-nine".