80206939 has 2 divisors, whose sum is σ = 80206940. Its totient is φ = 80206938.

The previous prime is 80206937. The next prime is 80206963. The reversal of 80206939 is 93960208.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80206939 - 2¹ = 80206937 is a prime.

Together with 80206937, 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 = 80206898 and 80206907.

It is not a weakly prime, because it can be changed into another prime (80206933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40103469 + 40103470.

It is an arithmetic number, because the mean of its divisors is an integer number (40103470).

Almost surely, 2^80206939 is an apocalyptic number.

80206939 is a deficient number, since it is larger than the sum of its proper divisors (1).

80206939 is an equidigital number, since it uses as much as digits as its factorization.

80206939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 80206939 is about 8955.8326804379. The cubic root of 80206939 is about 431.2581485823.

The spelling of 80206939 in words is "eighty million, two hundred six thousand, nine hundred thirty-nine".