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999961979 is a prime number
BaseRepresentation
bin111011100110100…
…011010101111011
32120200121022221212
4323212203111323
54021442240404
6243120353335
733531352022
oct7346432573
92520538855
10999961979
114734a8265
1223aa7584b
1312c225aa3
1496b3b8b9
155cbc506e
hex3b9a357b

999961979 has 2 divisors, whose sum is σ = 999961980. Its totient is φ = 999961978.

The previous prime is 999961943. The next prime is 999962057. The reversal of 999961979 is 979169999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-999961979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999961939) 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 as a sum of consecutive naturals, namely, 499980989 + 499980990.

It is an arithmetic number, because the mean of its divisors is an integer number (499980990).

Almost surely, 2999961979 is an apocalyptic number.

999961979 is a deficient number, since it is larger than the sum of its proper divisors (1).

999961979 is an equidigital number, since it uses as much as digits as its factorization.

999961979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22320522, while the sum is 68.

The square root of 999961979 is about 31622.1754311749. The cubic root of 999961979 is about 999.9873261727.

The spelling of 999961979 in words is "nine hundred ninety-nine million, nine hundred sixty-one thousand, nine hundred seventy-nine".