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999112001 is a prime number
BaseRepresentation
bin111011100011010…
…011110101000001
32120122000011000012
4323203103311001
54021233041001
6243050234305
733521211656
oct7343236501
92518004005
10999112001
11472a776a8
1223a725995
1312bcb8c44
1496999c2d
155caa82bb
hex3b8d3d41

999112001 has 2 divisors, whose sum is σ = 999112002. Its totient is φ = 999112000.

The previous prime is 999111991. The next prime is 999112007. The reversal of 999112001 is 100211999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987216400 + 11895601 = 31420^2 + 3449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-999112001 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p50804915 and since 999112001 and 50804915 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (999112007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499556000 + 499556001.

It is an arithmetic number, because the mean of its divisors is an integer number (499556001).

Almost surely, 2999112001 is an apocalyptic number.

It is an amenable number.

999112001 is a deficient number, since it is larger than the sum of its proper divisors (1).

999112001 is an equidigital number, since it uses as much as digits as its factorization.

999112001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 999112001 is about 31608.7329863125. The cubic root of 999112001 is about 999.7039126743.

The spelling of 999112001 in words is "nine hundred ninety-nine million, one hundred twelve thousand, one".