80369 has 2 divisors, whose sum is σ = 80370. Its totient is φ = 80368.
The previous prime is 80363. The next prime is 80387. The reversal of 80369 is 96308.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 67600 + 12769 = 260^2 + 113^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-80369 is a prime.
It is a super-2 number, since 2×803692 = 12918352322, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (80363) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40184 + 40185.
It is an arithmetic number, because the mean of its divisors is an integer number (40185).
280369 is an apocalyptic number.
It is an amenable number.
80369 is a deficient number, since it is larger than the sum of its proper divisors (1).
80369 is an equidigital number, since it uses as much as digits as its factorization.
80369 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1296, while the sum is 26.
The square root of 80369 is about 283.4942680197. The cubic root of 80369 is about 43.1548410699.
The spelling of 80369 in words is "eighty thousand, three hundred sixty-nine".
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