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BaseRepresentation
bin111011100110100…
…000000000000001
32120200120122011211
4323212200000001
54021441321124
6243120210121
733531264064
oct7346400001
92520518154
10999948289
11473498a4a
1223aa69941
1312c21c7a2
1496b368db
155cbc0e94
hex3b9a0001

999948289 has 2 divisors, whose sum is σ = 999948290. Its totient is φ = 999948288.

The previous prime is 999948269. The next prime is 999948317. The reversal of 999948289 is 982849999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999634689 + 313600 = 31617^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 999948289 - 219 = 999424001 is a prime.

It is not a weakly prime, because it can be changed into another prime (999948259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499974144 + 499974145.

It is an arithmetic number, because the mean of its divisors is an integer number (499974145).

It is a Proth number, since it is equal to 7629 ⋅ 217 + 1 and 7629 < 217.

Almost surely, 2999948289 is an apocalyptic number.

It is an amenable number.

999948289 is a deficient number, since it is larger than the sum of its proper divisors (1).

999948289 is an equidigital number, since it uses as much as digits as its factorization.

999948289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30233088, while the sum is 67.

The square root of 999948289 is about 31621.9589684131. The cubic root of 999948289 is about 999.9827627029.

The spelling of 999948289 in words is "nine hundred ninety-nine million, nine hundred forty-eight thousand, two hundred eighty-nine".