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80000839 is a prime number
BaseRepresentation
bin1001100010010…
…11011101000111
312120112110112001
410301023131013
5130440011324
611534410131
71660665412
oct461133507
9176473461
1080000839
11411818a6
1222960947
1313760899
14a8a6b79
157053e44
hex4c4b747

80000839 has 2 divisors, whose sum is σ = 80000840. Its totient is φ = 80000838.

The previous prime is 80000807. The next prime is 80000867. The reversal of 80000839 is 93800008.

It is an a-pointer prime, because the next prime (80000867) can be obtained adding 80000839 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80000839 - 25 = 80000807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80000539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40000419 + 40000420.

It is an arithmetic number, because the mean of its divisors is an integer number (40000420).

Almost surely, 280000839 is an apocalyptic number.

80000839 is a deficient number, since it is larger than the sum of its proper divisors (1).

80000839 is an equidigital number, since it uses as much as digits as its factorization.

80000839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80000839 is about 8944.3188114020. The cubic root of 80000839 is about 430.8884443100. Note that the first 3 decimals are identical.

The spelling of 80000839 in words is "eighty million, eight hundred thirty-nine", and thus it is an aban number.