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999916859 is a prime number
BaseRepresentation
bin111011100110011…
…000010100111011
32120200112001001202
4323212120110323
54021434314414
6243115404415
733531103334
oct7346302473
92520461052
10999916859
11473477377
1223aa5370b
1312c20b3a6
1496b2928b
155cbb69de
hex3b99853b

999916859 has 2 divisors, whose sum is σ = 999916860. Its totient is φ = 999916858.

The previous prime is 999916807. The next prime is 999916861. The reversal of 999916859 is 958619999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-999916859 is a prime.

It is a super-3 number, since 3×9999168593 (a number of 28 digits) contains 333 as substring.

Together with 999916861, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999916795 and 999916804.

It is not a weakly prime, because it can be changed into another prime (999916889) 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, 499958429 + 499958430.

It is an arithmetic number, because the mean of its divisors is an integer number (499958430).

Almost surely, 2999916859 is an apocalyptic number.

999916859 is a deficient number, since it is larger than the sum of its proper divisors (1).

999916859 is an equidigital number, since it uses as much as digits as its factorization.

999916859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14171760, while the sum is 65.

The square root of 999916859 is about 31621.4619997242. The cubic root of 999916859 is about 999.9722855653.

The spelling of 999916859 in words is "nine hundred ninety-nine million, nine hundred sixteen thousand, eight hundred fifty-nine".